Pinpoint Test AH: The Key-In-Ignition Warning Chime Is Inoperative
Instrumentation, Message Center and Warning Chimes
Pinpoint Test AH: The Key-In-Ignition Warning Chime Is Inoperative
Normal Operation
The Instrument Panel Cluster (IPC) receives the key-in-ignition warning status from the Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN) communication bus.
The SJB (Smart Junction Box) receives the key-in-ignition status from the Remote Function Actuator (RFA) module through the key-in-ignition input circuit. When the ignition is placed in the ACC position or if the vehicle is turned off with the selector lever out of PARK (P), the RFA (Remote Function Actuator) module provides voltage to the SJB (Smart Junction Box) through the key-in-ignition input circuit.
The SJB (Smart Junction Box) monitors the door ajar input from the LH front door and the key-in-ignition switch status. When the SJB (Smart Junction Box) detects a key-in-ignition voltage and the LH front door is open or ajar, the SJB (Smart Junction Box) sends the IPC (Instrument Panel Cluster) a chime request message to sound the key-in-ignition warning chime.
- DTC B1217:11 (Passive Key-In-Ignition Output: Circuit Short to Ground)- a continuous and on-demand DTC that sets in the RFA (Remote Function Actuator) module when the RFA (Remote Function Actuator) module detects the output voltage is 3.75 volts lower than the voltage received on the RFA (Remote Function Actuator) voltage input circuit, indicating a circuit overload (short to ground).
- DTC B1352 (Ignition Key-In Circuit Failure)- an on-demand DTC that sets in the SJB (Smart Junction Box) if the SJB (Smart Junction Box) detects an open on the key-in-ignition switch input circuit or if the SJB (Smart Junction Box) detects ignition START, RUN/START or RUN/ACC inputs without the key-in-ignition input.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- RFA (Remote Function Actuator) module
- SJB (Smart Junction Box)
- IPC (Instrument Panel Cluster)
PINPOINT TEST AH : THE KEY-IN-IGNITION WARNING CHIME IS INOPERATIVE
AH1 CARRY OUT THE CHIME FUNCTION ACTIVE COMMAND
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IPC (Instrument Panel Cluster) DataLogger.
- Select the IPC (Instrument Panel Cluster) chime command (SOUNDER_OUT).
- Scroll through the chimes to select Key-In-Ign chime.
Does the key-in-ignition chime operate?
Yes
GO to AH2.
No
INSTALL a new IPC (Instrument Panel Cluster). REFER to Instrument Panel Cluster (IPC) . TEST the system for normal operation.
AH2 CHECK THE DOOR AJAR MESSAGE CENTER WARNING INDICATOR OPERATION
- Ignition ON.
- Open then close the LH front door while observing the door ajar message center warning indicator.
Does the door ajar message center warning indicator operate correctly?
Yes
GO to AH3.
No
GO to Pinpoint Test X. Pinpoint Test X: The Door Ajar Message Center Warning Indicator Is Never/Always On
AH3 RETRIEVE THE RECORDED DTCs FROM THE SJB (Smart Junction Box) SELF-TEST
- Check for recorded DTCs from the SJB (Smart Junction Box) self-test.
Is DTC B1352 present?
Yes
GO to AH4.
No
INSTALL a new SJB (Smart Junction Box). TEST the system for normal operation.
AH4 CHECK THE SJB (Smart Junction Box) KEY-IN-IGNITION INPUT CIRCUIT FOR VOLTAGE
- Ignition OFF.
- Disconnect: SJB (Smart Junction Box) C2280B.
- Ignition In ACC.
- Measure the voltage between the SJB (Smart Junction Box) C2280B-35, circuit CDC30 (BU/GY), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to AH7.
No
GO to AH5.
AH5 CHECK THE SJB (Smart Junction Box) KEY-IN-IGNITION INPUT CIRCUIT FOR AN OPEN BETWEEN THE SJB (Smart Junction Box) AND THE RFA (Remote Function Actuator) MODULE
- Ignition OFF.
- Disconnect: RFA (Remote Function Actuator) Module C2153D.
- Measure the resistance between the SJB (Smart Junction Box) C2280B-35, circuit CDC30 (BU/GY), harness side and the RFA (Remote Function Actuator) module C2153D-1, circuit CDC30 (BU/GY), harness side.
Is the resistance less then 5 ohms?
Yes
GO to AH6.
No
REPAIR circuit CDC30 (BU/GY) for an open. CLEAR the DTCs. REPEAT the self-test.
AH6 CHECK THE SJB (Smart Junction Box) KEY-IN-IGNITION INPUT CIRCUIT FOR A SHORT TO GROUND
- Measure the resistance between the SJB (Smart Junction Box) C2280B-35, circuit CDC30 (BU/GY), harness side and ground.
Is the resistance greater than 10,000 ohms?
Yes
GO to AH8.
No
REPAIR circuit CDC30 (BU/GY) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
AH7 CHECK FOR CORRECT SJB (Smart Junction Box) OPERATION
- Disconnect all the SJB (Smart Junction Box) connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SJB (Smart Junction Box) connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new SJB (Smart Junction Box). TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
AH8 CHECK FOR CORRECT RFA (Remote Function Actuator) MODULE OPERATION
- Disconnect all the RFA (Remote Function Actuator) module connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the RFA (Remote Function Actuator) module connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new RFA (Remote Function Actuator) module. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.