2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 91
1. Perform self-diagnosis.
2. Check if "U1000: CAN COMM CIRCUIT" (DTC 100) other than "C1A05: BRAKE SW/STOP L SW" (DTC
5) is indicated in self-diagnosis item in the display.
Is it indicated?
YES - 1. CAN communication inspection. See: U Code Charts/U1000/ACS/ICC.
2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
NO - GO TO 2.
2.CHECK ICC BRAKE SWITCH WITH ICC DATA MONITOR
With CONSULT-III
With "ICC" "Data Monitor", check if "BRAKE SW" operates normally.
OK or NG
OK - GO TO 3.
NG - GO TO 6.
3.CHECK STOP LAMP SWITCH WITH ABS DATA MONITOR
With CONSULT-III
With "ABS" "Data Monitor", check if "STOP LAMP SW" operates normally.
OK or NG
OK - GO TO 4.
NG - GO TO 11.
4.PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
1. Perform "ENGINE" self-diagnosis. See: Diagnostic Trouble Code Descriptions/DTC Index/EC (for VQ35HR) or , "CONSULT-III
Function" (for VK45DE).
2. Check if malfunction is indicated.
Is malfunction indicated?
YES - 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NO - GO TO 5.
5.PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-III
1. Perform "ABS" self-diagnosis. See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and Inspection/Scan
Tool Testing and Procedures/Trouble Diagnosis.
2. Check if malfunction is indicated.
Is malfunction indicated?
YES - 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NO - 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
6.CHECK ICC BRAKE SWITCH INSTALLATION AND ADJUSTMENT
Check ICC brake switch for proper installation, and adjust the switch if necessary. See: Brakes and Traction Control/Brake Pedal Assy/Service
and Repair/Inspection and Adjustment See: Brakes and Traction Control/Brake Pedal Assy/Service and Repair/Removal and Installation.
OK or NG
OK - GO TO 7.
NG - 1. Adjust ICC brake switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
7.CHECK ICC BRAKE SWITCH
Check ICC brake switch. See: Cruise Control/Testing and Inspection/Component Tests and General Diagnostics/ICC Brake Switch and Stop
Lamp Switch.
OK or NG
OK - GO TO 8.
NG - 1. Replace ICC brake switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
8.CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ICC brake switch connector.
3. Turn ignition switch ON.
