Diagnosis Procedure
WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT
- Turn the ignition switch ON.
- Check voltage between ADAS control unit harness connector and ground.VOLTAGE SPECIFICATION
Terminals Condition Voltage (Approx.) (+) (-) ADAS control unit Ground Warning systems switch Connector Terminal B61 1 Pressed 0 V Released 12 V Is the inspection result normal?
YES: Replace the ADAS control unit. Refer to "REMOVAL AND INSTALLATION ".
NO: GO TO 2.
- CHECK WARNING SYSTEMS SWITCH
- Turn ignition switch OFF.
- Remove warning systems switch.
- Check warning systems switch. Refer to
"COMPONENT INSPECTION ".
Is the inspection result normal?
YES: GO TO 3.
NO: Replace the warning systems switch. Refer to "REMOVAL AND INSTALLATION ".
- CHECK WARNING SYSTEMS SWITCH GROUND CIRCUIT
Check continuity between twin switch harness connector terminal and the ground.
CONTINUITY SPECIFICATIONTwin switch Ground Continuity Connector Terminal M127 3 Existed Is the inspection result normal?
YES: GO TO 4.
NO: Repair harness or connector.
- CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT CIRCUIT FOR OPEN
- Disconnect the ADAS control unit connector.
- Check continuity between the ADAS control unit harness connector and twin switch harness connector.CONTINUITY SPECIFICATION
ADAS control unit Twin switch Continuity Connector Terminal Connector Terminal B61 1 M127 2 Existed Is the inspection result normal?
YES: GO TO 5.
NO: Repair the harnesses or connectors.
- CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT CIRCUIT FOR SHORT
Check continuity between the ADAS control unit harness connector and ground.
CONTINUITY SPECIFICATIONADAS control unit Ground Continuity Connector Terminal B61 1 Not existed Is the inspection result normal?
YES: Replace the ADAS control unit. Refer to "REMOVAL AND INSTALLATION ".
NO: Repair the harnesses or connectors.