Pinpoint Test 1
PINPOINT TEST 1: THE CHIME SOUNDS WHEN THE DRIVER DOOR IS AJAR (NO KEY IN IGNITION AND HEADLAMPS OFF)Normal Operation
The instrument cluster receives the key-in-ignition warning status from the smart junction box (SJB) over the medium speed controller area network (MS-CAN). The key-in-ignition warning switch (part of the ignition switch) is hardwired to the SJB through circuit (L/GY). When the key is inserted into the ignition lock cylinder, the key-in-ignition switch closes and supplies voltage to the SJB. The SJB monitors the door ajar input from the LH front door and the key-in-ignition switch status. When the key is inserted into the ignition lock cylinder and the LH front door is open or ajar, the SJB sends the instrument cluster a chime request message to sound the key-in-ignition warning chime. The headlamps on warning chime sounds when the driver door is opened with the ignition switch in the OFF position, the key is not in the ignition lock cylinder, and the headlamp switch is in the PARK or HEADLAMP ON position.
The SJB receives the headlamp switch status from the headlamp switch and the LH front door ajar status from the LH front door ajar switch through hardwired circuitry. The headlamps on warning chime sounds when the LH front door is opened with the ignition switch in the OFF position, the key is not in the ignition lock cylinder, and the headlamp switch is in the PARK or HEADLAMP ON position. The SJB communicates the headlamp on chime request to the instrument cluster when the headlamps or parking lamps are on and the driver door is opened. The autolamps feature must not be selected for the headlamps on warning chime to operate.
DTC B1352 (Ignition Key-In Circuit Failure) - is an on-demand DTC that sets if the SJB detects an open on the key-in-ignition switch input, circuit (L/GY) or if the SJB detects ignition START, RUN/START or RUN/ACC inputs without the key-in-ignition input.
Possible Causes
- Wiring, terminals or connectors
- Key-in-ignition warning switch (part of the ignition switch)
- SJB
Diagnostic Procedure
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
