Symptom Chart

SYMPTOM	POSSIBLE CAUSES	ACTION
Steering reduced and Emergency steering not available displayed in instrument cluster	incorrect temperature threshold stored in the PSCM PSCM DTC U0080-82 U0080-87 B1304-04 B1304-98	Using the JLR approved diagnostic equipment, re-configure the PSCM with the latest level software. Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure.
No communication with PSCM	PSCM power or ground circuit open circuit, high resistance HS CAN Bus (chassis) circuit short circuit to ground, short circuit to power, open circuit, high resistance FlexRay circuit(s) open circuit, high resistance	Refer to the electrical circuit diagrams and Check the PSCM power and ground circuits for open circuit, high resistance. Refer to the appropriate Wiring Diagrams , for schematic and connector information. Using the JLR approved diagnostic equipment, perform a CAN network integrity test. Refer to the electrical circuit diagrams and check the HS CAN Bus (chassis) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Refer to the appropriate Wiring Diagrams , for schematic and connector information. Using the JLR approved diagnostic equipment, perform a FlexRay network integrity test. Refer to the electrical circuit diagrams and check the FlexRay circuit(s) open circuit, high resistance. Refer to the appropriate Wiring Diagrams , for schematic and connector information.
Permanently heavy/notchy steering with the engine running, even after cycling the ignition	Abnormally high friction in steering ball joints or suspension components Abnormally high friction in steering or suspension components due to poor subframe mounting foot alignment or as a result of impact damage Abnormally high friction in steering gear due to water ingress Fouling/abnormally high friction within steering column components Power steering system fault Vehicle speed signal fault	NOTE: Do not damage gaiters on steering gear removal. Failure to follow this instruction may result in warranty becoming invalid for steering gear assembly. If the customer has reported notchy steering, turn the steering gear slowly across lock (with the ignition off) and check for any tight or high friction points in the steering travel. Disconnect the steering gear from the suspension. Check the suspension system for freedom of movement or abnormally high friction. NOTE: This type of steering gear damage is not covered by warranty. Check the steering and suspension system for correct installation and for signs of impact damage. For additional information on the suspension system Refer to: SUSPENSION SYSTEMFor steering gear damage inspection see the table in this procedure. NOTE: Water ingress due to previous repairs is not covered by warranty. Remove the steering gear boots and check for evidence of water inside the steering gear boots. For steering gear damage inspection see the table in this procedure. If evidence of water ingress is present, install a new steering gear as required. Refer to: STEERING GEAR NOTE: A new steering column lower shaft to steering gear bolt must be installed. Disconnect the steering column lower shaft from the steering gear. Check the steering column and universal joints for freedom of movement or abnormally high friction. Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure. Using the JLR approved diagnostic equipment, check the Anti-Lock Brake System Control Module (ABS) for related DTC (s) and refer to the relevant DTC index. Refer to: WHEEL ALIGNMENT
Steering catch-up (heavy at fast steering wheel rates)	PSCM power or ground circuit open circuit, high resistance Battery/charging system fault Abnormally high friction in steering ball joints or suspension components Abnormally high friction in steering or suspension components due to poor subframe mounting foot alignment or as a result of impact damage Abnormally high friction in steering gear due to water ingress Power steering system fault	NOTE: The system is designed to give a heavier but stable steering feel when a low/high voltage or high temperature is detected. It is recommended to reduce harsh inputs to the steering in these scenarios, for example recently after start-up, extreme cold climate or high electrical system utilization/load. Depending on the level of reduction this could be accompanied by an alert. Refer to the electrical circuit diagrams and Check the PSCM power and ground circuits for open circuit, high resistance. Refer to the appropriate Wiring Diagrams , for schematic and connector information. Refer to the relevant service information and test the battery and charging system. REFER to: BATTERY, MOUNTING AND CABLES - [+] NON-ELECTRIC VEHICLES Disconnect the steering gear from the suspension. Check the suspension system for freedom of movement or abnormally high friction. For additional information on the suspension system Refer to: SUSPENSION SYSTEM NOTE: This type of steering gear damage is not covered by warranty. Check the steering and suspension system for correct installation and for signs of impact damage. For additional information on the suspension system Refer to: SUSPENSION SYSTEMFor steering gear damage inspection see the table in this procedure. NOTE: Water ingress due to previous repairs is not covered by warranty. Check the steering gear for freedom of movement or abnormally high friction. Remove the steering gear boots and check for evidence of water inside the steering gear boots. For steering gear damage inspection see the table in this procedure. If evidence of water ingress is present, install a new steering gear as required. Refer to: STEERING GEAR Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure.
Permanent loss of steering assistance with engine running, even after cycling ignition	PSCM power or ground circuit open circuit, high resistance Battery/charging system fault HS CAN Bus (chassis) circuit short circuit to ground, short circuit to power, open circuit, high resistance FlexRay circuit(s) open circuit, high resistance Power steering system fault	Refer to the electrical circuit diagrams and Check the PSCM power and ground circuits for open circuit, high resistance. Refer to the appropriate Wiring Diagrams , for schematic and connector information. Refer to the relevant service information and test the battery and charging system. REFER to: BATTERY, MOUNTING AND CABLES - [+] NON-ELECTRIC VEHICLES Using the JLR approved diagnostic equipment, perform a CAN network integrity test. Refer to the electrical circuit diagrams and check the HS CAN Bus (chassis) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Refer to the appropriate Wiring Diagrams , for schematic and connector information. Using the JLR approved diagnostic equipment, perform a FlexRay network integrity test. Refer to the electrical circuit diagrams and check the FlexRay circuit(s) open circuit, high resistance. Refer to the appropriate Wiring Diagrams , for schematic and connector information. Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure.
Intermittent reduction/loss of steering assistance (recovers during drive cycle or after ignition cycle)	PSCM power or ground circuit open circuit, high resistance Battery/charging system fault Power steering control module internal temperature above threshold Power steering system fault	NOTE: The system is designed to give a heavier but stable steering feel when a low/high voltage or high temperature is detected. It is recommended to reduce harsh inputs to the steering in these scenarios, for example recently after start-up, extreme cold climate or high electrical system utilization/load. Depending on the level of reduction this could be accompanied by an alert. Refer to the electrical circuit diagrams and Check the PSCM power and ground circuits for open circuit, high resistance. Refer to the appropriate Wiring Diagrams , for schematic and connector information. Refer to the relevant service information and test the battery and charging system. REFER to: BATTERY, MOUNTING AND CABLES - [+] NON-ELECTRIC VEHICLES Check for heat shield damage or mud packing around steering gear and PSCM . Allow the PSCM to cool. Consider the environmental temperature Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure.
Reduction/loss of assistance when engine stop/start function activates	No fault present. This is a feature to reduce fuel consumption when the vehicle is stationary and the steering is not needed or is not recommended due to tire scrub. If steering is required, recommend prompting a re-start for example through clutch pedal depression	Educate customer and refer to the relevant section of the Owners Handbook.
Excessive free play at steering wheel (when no assistance and very light torque is applied to the steering wheel)	Steering wheel fixing loose Steering column fixing(s) loose Steering gear fixing(s) loose Steering linkage toe adjust locknut(s) loose Steering linkage outer ball joint to knuckle fixing(s) loose Steering column pinch bolt loose Steering column universal joint(s) excessively worn Steering gear excessively worn	NOTE: Check for play in steering gear. Do not attempt to adjust the steering gear. Failure to follow this instruction will result in warranty becoming invalid. Refer to any relevant special service messages for checking procedures. Check the steering wheel fixing torque. Refer to: SPECIFICATIONS Check the steering column fixings torques. Refer to: SPECIFICATIONS Check the steering gear fixings torques. Refer to: SPECIFICATIONS Check the steering linkage toe adjust locknut(s) torques. Refer to: SPECIFICATIONS Check the steering linkage outer ball joint to knuckle fixing(s) torques. Refer to: SPECIFICATIONS Check the steering column pinch bolt torque. Refer to: SPECIFICATIONS Check the steering column universal joints for excessive free play. NOTE: Water ingress due to previous repairs is not covered by warranty. Check the steering gear for freedom of movement or abnormally high friction. Remove the steering gear boots and check for evidence of water inside the steering gear boots. For steering gear damage inspection see the table in this procedure. If evidence of water ingress is present, install a new steering gear as required. Refer to: STEERING GEAR
Vehicle pull to one side without brake applied	Damage to wheel, tires, suspension or steering components Suspension or steering system components are loose Wheel and tire assemblies are non-factory specification Uneven/irregular tire wear Brake binding Steering angle sensor fault Abnormally high friction or excessive wear in the steering or suspension components Wheel alignment is incorrect	NOTE: Vehicles are optimized to reduce pull dependent on the hand of drive and the road crown. Therefore driving on the opposite side of the road may result in pull to one side. GO to Pinpoint Test A .
Vehicle pull to one side with brake applied	Wheel and tire assemblies are non-factory specification Uneven/irregular tire wear Brake binding Wheel alignment is incorrect Damage to wheel, tires, suspension or steering components	Refer to: BRAKE SYSTEM
Steering wheel misalignment	Damage to wheel, tires, suspension or steering components Suspension or steering system components are loose Wheel and tire assemblies are non-factory specification Uneven/irregular tire wear Brake binding Steering angle sensor fault Abnormally high friction or excessive wear in the steering or suspension components Wheel alignment is incorrect	NOTE: Vehicles are optimized to reduce pull dependent on the hand of drive and the road crown. Therefore driving on the opposite side of the road may result in pull to one side. GO to Pinpoint Test A .
Vehicle drift	Damage to wheel, tires, suspension or steering components Suspension or steering system components are loose Wheel and tire assemblies are non-factory specification Uneven/irregular tire wear Brake binding Steering angle sensor fault Abnormally high friction or excessive wear in the steering or suspension components Wheel alignment is incorrect	NOTE: Vehicles are optimized to reduce pull dependent on the hand of drive and the road crown. Therefore driving on the opposite side of the road may result in pull to one side. GO to Pinpoint Test A .
Poor feel, steering light, not connected, requires constant correction	Wheel/tire size incorrect Uneven/irregular tire wear Damaged or worn front/rear suspension components Steering angle sensor fault Abnormally high friction in steering ball joints or suspension components Excessive wear or abnormally high friction in steering gear due to water ingress Wheel alignment incorrect Power steering system fault	Check that the wheels and tires comply with the manufacturer's specification for the vehicle. Refer to: SPECIFICATIONS Check the tires for uneven or irregular wear. Check the front and rear suspension for damage or wear. Using the JLR approved diagnostic equipment, check the SASM for related DTC s and REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: STEERING ANGLE SENSOR MODULE (SASM) NOTE: Water ingress due to previous repairs is not covered by warranty. Check the steering gear for freedom of movement or abnormally high friction. Remove the steering gear boots and check for evidence of water inside the steering gear boots. For steering gear damage inspection see the table in this procedure. If evidence of water ingress is present, install a new steering gear as required. Refer to: STEERING GEAR Check the suspension system for freedom of movement or abnormally high friction. Disconnect the steering column from the steering gear. Check the steering column and universal joints for freedom. Check the steering gear for freedom of movement. Check and adjust wheel alignment as necessary. Refer to: WHEEL ALIGNMENT Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure.
Steering assistance no longer changes when terrain mode changed	Terrain Response system fault Body Control Module (BCM) system fault Car Configuration File (CCF) mismatch with vehicle specification	NOTE: After updating the CCF , set the ignition to on and wait 30 seconds before clearing the DTC (s). Using the JLR approved diagnostic equipment, check the Terrain Response switchpack (TR) for related DTC (s) and refer to the relevant DTC Index Using the JLR approved diagnostic equipment, check the BCM for related DTC (s) and refer to the relevant DTC Index. REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: BODY CONTROL MODULE (BCM) Using the JLR approved diagnostic equipment, check and update the CCF as necessary. Clear the DTC (s) and retest.
Park assist function is not working	Tire pressure(s) incorrect Wheel/tire size incorrect Damaged or worn front/rear suspension components Wheel alignment incorrect Fouling/abnormally high friction within steering wheel/steering column components Parking aid system fault BCM system fault Power steering system fault Steering angle sensor fault Anti-lock brake system fault Transmission system fault CCF mismatch with vehicle specification	NOTE: After updating the CCF , set the ignition to ON and wait 60 seconds before clearing the DTC (s). Check and adjust the tire pressures as necessary. Refer to: SPECIFICATIONS Check that the wheels and tires comply with the manufacturer's specification for the vehicle. Refer to: SPECIFICATIONS Check the front and rear suspension for damage or wear. Check and adjust wheel alignment as necessary. Refer to: WHEEL ALIGNMENT Disconnect the steering column from the steering gear. Check the steering wheel/steering column and universal joints for freedom of movement or abnormally high friction. Using the JLR approved diagnostic equipment, check the Parking Assist Control Module (PAM) for related DTC s and refer to the relevant DTC Index. REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: NEAR FIELD SENSING MODULE (NFSM) Using the JLR approved diagnostic equipment, check the BCM for related DTC (s) and refer to the relevant DTC Index. REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: BODY CONTROL MODULE (BCM) Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure. Using the JLR approved diagnostic equipment, check the SASM for related DTC s and REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: STEERING ANGLE SENSOR MODULE (SASM) Using the JLR approved diagnostic equipment, check the ABS for related DTC (s) and refer to the relevant DTC index. Refer to: WHEEL ALIGNMENT Using the JLR approved diagnostic equipment, check the Transmission Control Module (TCM) for related DTC s and refer to the relevant DTC Index. REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: TRANSMISSION CONTROL MODULE (TCM) /DIAGNOSTIC TROUBLE CODE INDEX - DTC: TRANSMISSION CONTROL MODULE (TCM) FOR 8HP76/51 TRANSMISSION Using the JLR approved diagnostic equipment, check and update the CCF as necessary. Clear the DTC (s) and retest.
Shimmy through steering wheel without brake applied	Tire damage Uneven/irregular tire wear Wheel imbalance Driveshaft out of balance (normally accompanied by more severe body shake and less steering wheel feedback compared to a shimmy) Damaged or worn front/rear suspension components	NOTE: Shimmy: Defined as a lower frequency feedback/oscillation through the steering, which changes with vehicle speed. A good example of this is when the wheels are out of balance at around 65-85 km/h. Check the tires for damage. Check the tires for flatspots and uneven or irregular wear. Check the wheels for imbalance. Refer to: WHEEL AND TIRE ASSEMBLY BALANCING Check the drive shafts. Check the front and rear suspension for damage or wear.
Harsh, high frequency vibration through steering wheel	Tire pressure(s) incorrect Wheel/tire size incorrect Power steering system fault	Check and adjust the tire pressures as necessary. Refer to: SPECIFICATIONS Check that the wheels and tires comply with the manufacturer's specification for the vehicle. Refer to: SPECIFICATIONS Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure.
Vehicle turns hard into end lock/lock stops	Steering angle sensor fault New steering components installed and calibration routine not performed Uneven toe setting (tire contact with suspension or body components)	Using the JLR approved diagnostic equipment, check the SASM for related DTC s and REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: STEERING ANGLE SENSOR MODULE (SASM) Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure. Using the JLR approved diagnostic equipment, perform routine - Power Steering Soft Lock End Stops Reset Routine Check and adjust wheel alignment as necessary. Refer to: WHEEL ALIGNMENT
Knocking through steering wheel when pulling away and/or braking with no warning light	Steering gear fixing(s) loose Steering column pinch bolt loose Excessive wear in steering system Steering wheel/steering column components fixings loose Damaged or worn front/rear suspension components	NOTE: In the case steering gear bolts are loose, often a creaking is heard when steering near the lock stops position. Check the steering gear fixings torques. Refer to: SPECIFICATIONS Check the steering column pinch bolt torque. Refer to: SPECIFICATIONS Check steering column components for excessive wear and rectify as necessary. Check the steering wheel/steering column fixings torques. Refer to: SPECIFICATIONS Check the front and rear suspension for damage or wear.
Scraping from inside of vehicle when turning the steering wheel	Steering column fouling components Clockspring mechanism fouling Uneven toe setting (tire contact with suspension or body components)	Check the steering column for fouling on cowls, carpets, or harnesses. Check the clockspring mechanism for security. Check and adjust wheel alignment as necessary. Refer to: WHEEL ALIGNMENT
Excessive noise (refer to further applicable special service message information) with no warning light, instability, graunch	Tire pressure(s) incorrect Wheel/tire size incorrect Damaged or worn front/rear suspension components Foul condition Water ingress to the steering gear Clockspring internal failure	Check and adjust the tire pressures as necessary. Refer to: SPECIFICATIONS Check that the wheels and tires comply with the manufacturer's specification for the vehicle. Refer to: SPECIFICATIONS Check the front and rear suspension for damage or wear. Check for a foul condition between the steering column and the body. Check for a foul condition between the steering gear and the body. NOTE: Water ingress due to previous repairs is not covered by warranty. Check the steering gear for freedom of movement or abnormally high friction. Remove the steering gear boots and check for evidence of water inside the steering gear boots. For steering gear damage inspection see the table in this procedure. If evidence of Refer to: STEERING GEAR water ingress is present, install a new steering gear as required. Install a new clockspring. Refer to: CLOCKSPRING
Excessive noise (refer to further applicable special service message information) with amber warning light, instability, graunch	Tire pressure(s) incorrect Wheel/tire size incorrect Damaged or worn front/rear suspension components Foul condition Water ingress to the steering gear Clockspring internal failure Transmission system fault PSCM is not configured correctly Abnormally high friction in steering or suspension components due to poor subframe mounting foot alignment or as a result of impact damage	Check and adjust the tire pressures as necessary. Refer to: SPECIFICATIONS Check that the wheels and tires comply with the manufacturer's specification for the vehicle. Refer to: SPECIFICATIONS Check the front and rear suspension for damage or wear. Check for a foul condition between the steering column and the body. Check for a foul condition between the steering gear and the body. NOTE: Water ingress due to previous repairs is not covered by warranty. Check the steering gear for freedom of movement or abnormally high friction. Remove the steering gear boots and check for evidence of water inside the steering gear boots. For steering gear damage inspection see the table in this procedure. If evidence of water ingress is present, install a new steering gear as required. Refer to: STEERING GEAR Install a new clockspring. Refer to: CLOCKSPRING Using the JLR approved diagnostic equipment, check the TCM for related DTC s and refer to the relevant DTC Index. REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: TRANSMISSION CONTROL MODULE (TCM) /DIAGNOSTIC TROUBLE CODE INDEX - DTC: TRANSMISSION CONTROL MODULE (TCM) FOR 8HP76/51 TRANSMISSION Using the JLR approved diagnostic equipment, re-configure the PSCM with the latest level software. Check the steering and suspension system for correct installation and for signs of impact damage.
Excessive noise (refer to further applicable special service message information), zipper, whoop, rattle	Foul condition PSCM power or ground circuit open circuit, high resistance Battery/charging system fault Steering gear wear excessive Abnormally high friction in steering or suspension components due to poor subframe mounting foot alignment or as a result of impact damage Uneven toe setting (tire contact with suspension or body components)	Check for a foul condition between the steering column and the body. Check for a foul condition between the steering gear and the body. Refer to the electrical circuit diagrams and Check the PSCM power and ground circuits for open circuit, high resistance. Refer to the appropriate Wiring Diagrams , for schematic and connector information. Refer to the relevant service information and test the battery and charging system. REFER to: BATTERY, MOUNTING AND CABLES - [+] NON-ELECTRIC VEHICLES Install a new steering gear. Refer to: STEERING GEAR Check the steering and suspension system for correct installation and for signs of impact damage. Check and adjust wheel alignment as necessary. Refer to: WHEEL ALIGNMENT
The amber general warning indicator is illuminated and a warning message 'Power steering assistance reduced' is displayed in the Instrument Panel Cluster Control Module (IPC)	PSCM DTC B1304-04 B1304-17	Using the JLR approved diagnostic equipment, re-configure the PSCM with the latest level software. Using the JLR approved diagnostic equipment, check the PSCM for related DTC (s) and refer to the relevant DTC Index in this procedure.