Symptom Troubleshooting Chart: Notes

NOTE:

Self-Test Diagnostics must be performed before proceeding to Symptom Troubleshooting Chart.

SYMPTOM TROUBLESHOOTING CHART - CRUISE CONTROL

Symptom Troubleshooting Chart - Cruise Control
Problem	Possible Cause	Action
The cruise control is inoperative - no flash codes	Cruise control cable not attached to the throttle. Battery junction box (BJB) fuse(s): 1 (50A) 3 (50A) 9 (40A) Smart junction box (SJB) fuse(s): 7 (50A) 20 (10A) 26 (2A) 32 (5A) SJB Circuitry. Brake pedal position (BPP) switch. Cruise control cable. Cruise control switches. Powertrain control module (PCM). Cruise control actuator. Cruise control connector 0120-101 not connected.	See CRUISE CONTROL SYSTEM PINPOINT TEST 1: CRUISE CONTROL IS INOPERATIVE - NO FLASH CODES .
The set speed fluctuates	Powertrain control module (PCM). Cruise control servo. Cruise control switch. Circuitry. Cruise control cable. Engine.	See CRUISE CONTROL SYSTEM PINPOINT TEST 2: SET SPEED FLUCTUATES .
The cruise control does not disengage when the brakes are applied	Battery junction box (BJB) fuse(s): 1 (50A) 3 (50A) 9 (40A) Brake pedal position (BPP) switch. Circuitry. Deactivator switch. Binding cruise control cable. Cruise control servo.	See CRUISE CONTROL SYSTEM PINPOINT TEST 3: CRUISE CONTROL DOES NOT DISENGAGE WHEN THE BRAKES ARE APPLIED .
The cruise control does not disengage when the clutch is applied	Clutch pedal position (CPP) switch. Circuitry.	See CRUISE CONTROL SYSTEM PINPOINT TEST 4: CRUISE CONTROL DOES NOT DISENGAGE WHEN THE CLUTCH IS APPLIED .
The cruise control switch is inoperative	Cruise control switch. Cruise control servo.	See CRUISE CONTROL SYSTEM PINPOINT TEST 5: CRUISE CONTROL SWITCH IS INOPERATIVE .
Flash with last switch pressed and dynamic pull occurs at the throttle	-	Test passed.
The cruise control switch is in operative-flash with last switch pressed, but no dynamic pull occurs at the throttle	Cruise control cable. Cruise control servo.	See CRUISE CONTROL SYSTEM PINPOINT TEST 6: FLASH WITH LAST SWITCH PRESSES BUT NO DYNAMIC PULL OCCURS AT THE THROTTLE .
The cruise control switch is inoperative-flash with last switch pressed, dynamic pull occurs at the throttle	Circuitry. Cruise control servo.	See CRUISE CONTROL SYSTEM PINPOINT TEST 5: CRUISE CONTROL SWITCH IS INOPERATIVE .
Flash Code 2 - brake pedal position (BPP) switch circuit failure	Circuitry. BPP switch. Clutch pedal position (CPP) switch. Cruise control servo.	See CRUISE CONTROL SYSTEM PINPOINT TEST 7: FLASH CODE 2 - BRAKE PEDAL POSITION (BPP) SWITCH CIRCUIT FAILURE .
Flash Code 3 - deactivator switch circuit failure	Battery junction box (BJB) fuse(s): 1 (50A) 3 (50A) 9 (40A) Circuitry. Deactivator switch. Cruise control servo.	See CRUISE CONTROL SYSTEM PINPOINT TEST 8: FLASH CODE 3 - DEACTIVATOR SWITCH FAILURE .
Flash Code 4 - speed signal circuit failure	Circuitry. Cruise control servo. Powertrain Control Module (PCM).	See CRUISE CONTROL SYSTEM PINPOINT TEST 10: FLASH CODE 4 - SPEED SIGNAL CIRCUIT FAILURE .
Flash Code 5	Cruise control servo.	Install a new cruise control servo. See CRUISE CONTROL SERVO REMOVAL/INSTALLATION .
The cruise control indicator lamp is always on	Circuitry. Instrument cluster. Cruise control servo.	See CRUISE CONTROL SYSTEM PINPOINT TEST 9: CRUISE CONTROL INDICATOR LAMP IS ALWAYS ON .
Cruise Control indicator is inoperative	Circuitry. Instrument cluster. Cruise control servo.	See INSTRUMENT CLUSTER DIAGNOSIS .