2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 84
OK, check the self-diagnosis results using CONSULT-III again.
NG - Check alternator. Refer to
Discord BCM-I-Key
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
B2590 DISCORD BCM-I-KEY
Self-diagnostic results:
"DISCORD, BCM-I-KEY" displayed on CONSULT-III screen
1.PERFORM INITIALIZATION
Perform initialization with CONSULT-III. Refer to "CONSULT-III Operation Manual NATS-IVIS/NVIS".
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES - ID was unregistered.
NO - BCM is malfunctioning.
- Replace BCM
- Perform initialization again
Start Function
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
B2590 DISCORD BCM-I-KEY
Intelligent Key unit performs the ID verification with BCM that allows the engine to .BCM starts the engine if the
ID is OK and prevents the engine from starting if the ID is not registered.
1.PERFORM INITIALIZATION
Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to "CONSULT-III Operation Manual NATS-IVIS/NVIS".
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES - ID was unregistered.
NO - BCM is malfunctioning.
- Replace BCM
- Perform initialization again
C1A25
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
C1A25 SHIFT RANGE IND
1.PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS
1. Perform self-diagnosis.
2. Check if "U1000: CAN COMM CIRCUIT" (DTC 100) other than "C1A25: SHIFT RANGE IND" (DTC 25) 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 TCM DATA MONITOR
With CONSULT-III
With "TRANSMISSION" "Data Monitor", check if gear positions are correct.
OK or NG
OK - 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.
NG - 1. Perform "TRANSMISSION" self-diagnosis. See: Powertrain Management/Transmission Control Systems/Testing and Inspection/Scan
Tool Testing and Procedures/5AT RE5R05A/Trouble Diagnosis/CONSULT-III Function (Transmission) (for 5AT models) or See: Diagnostic
Trouble Code Descriptions/DTC Index/TCM (for 7AT models).
2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
C1A33
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
C1A33 CAN TRANSMISSION ERROR
1.PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS
1. Perform self-diagnosis.
2. Check if "U1000: CAN COMM CIRCUIT" (DTC 100) other than "C1A33: CAN TRANSMISSION ERROR"
