April 5, 2026: LEMON Manuals is launched! Read the announcement.

Pinpoint Test F: Check The FLEXRAY (Chassis) Signal/Circuit(S) To The PSCM

NOTE: Refer to the appropriate Wiring Diagrams , for schematic and connector information.

F1: CHECK THE FLEXRAY (CHASSIS) SIGNAL/CIRCUIT(S) FROM THE BCM-GWM TO THE PSCM

Disconnect PSCM electrical connector C1CS05A.

G15317818

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

With the ignition ON, measure the voltage between the PSCM electrical connector C1CS05A pin 4 (PK), harness side and ground.
Is the voltage between 1.5 Volts and 3.5 Volts with the ignition ON?

Yes: GO to F2.

No: If the voltage is less than 1.5 Volts, check for a short to ground. REPAIR the circuit or REPLACE the wiring harness as necessary. TEST the system for normal operation. If the wiring harness is OK, Refer to: COMMUNICATIONS NETWORK

If the voltage is greater than 3.5 Volts, check for a short to battery. REPAIR the circuit or REPLACE the wiring harness as necessary. TEST the system for normal operation. If the wiring harness is OK, Refer to: COMMUNICATIONS NETWORK

F2: CHECK THE FLEXRAY (CHASSIS) SIGNAL/CIRCUIT(S) FROM THE BCM-GWM TO THE PSCM

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
1. With the ignition ON, measure the voltage between the PSCM electrical connector C1CS05A pin 6 (GN), harness side and ground.
  Is the voltage between 1.5 Volts and 3.5 Volts with the ignition ON?
  
  Yes: GO to F3.
  
  No: If the voltage is less than 1.5 Volts, check for a short to ground. REPAIR the circuit or REPLACE the wiring harness as necessary. TEST the system for normal operation. If the wiring harness is OK, Refer to: COMMUNICATIONS NETWORK
  
  If the voltage is greater than 3.5 Volts, check for a short to battery. REPAIR the circuit or REPLACE the wiring harness as necessary. TEST the system for normal operation. If the wiring harness is OK, Refer to: COMMUNICATIONS NETWORK

F3: CHECK THE FLEXRAY (CHASSIS) SIGNAL/CIRCUIT(S) FROM THE ABS MODULE TO THE PSCM

Disconnect PSCM electrical connector C1CS05A.

G15317818

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

With the ignition ON, measure the voltage between the PSCM electrical connector C1CS05A pin 5 (PK), harness side and ground.
Is the voltage between 1.5 Volts and 3.5 Volts with the ignition ON?

Yes: GO to F4.

No: If the voltage is less than 1.5 Volts, check for a short to ground. REPAIR the circuit or REPLACE the wiring harness as necessary. TEST the system for normal operation. If the wiring harness is OK, Refer to: BRAKE SYSTEM

If the voltage is greater than 3.5 Volts, check for a short to battery. REPAIR the circuit or REPLACE the wiring harness as necessary. TEST the system for normal operation. If the wiring harness is OK, Refer to: BRAKE SYSTEM

F4: CHECK THE FLEXRAY (CHASSIS) SIGNAL/CIRCUIT(S) FROM THE ABS MODULE TO THE PSCM

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
1. With the ignition ON, measure the voltage between the PSCM electrical connector C1CS05A pin 7 (GN)
  Is the voltage between 1.5 Volts and 3.5 Volts with the ignition ON?
  
  Yes: Continue with the Action list detailed within the DTC Index - PSCM for the DTC directed to this pinpoint test.
  
  No: If the voltage is less than 1.5 Volts, check for a short to ground. REPAIR the circuit or REPLACE the wiring harness as necessary. TEST the system for normal operation. If the wiring harness is OK, Refer to: BRAKE SYSTEM
  
  If the voltage is greater than 3.5 Volts, check for a short to battery. REPAIR the circuit or REPLACE the wiring harness as necessary. TEST the system for normal operation. If the wiring harness is OK, Refer to: BRAKE SYSTEM