Pinpoint Tests AD: The Key-In-Ignition Warning Chime Is Inoperative
Instrumentation and Warning Chimes
Pinpoint Test
Pinpoint Test AD: The Key-In-Ignition Warning Chime Is Inoperative
Refer to Wiring Diagram Set 60, Instrument Cluster for schematic and connector information. Diagrams By Number
Normal Operation
The key-in-ignition warning chime sounds when the driver door is opened with the key in the ignition lock cylinder and the ignition switch is in the OFF or ACC position. The Instrument Cluster (IC) uses the driver door ajar status, ignition RUN/START position status, or operational mode of the cluster, and the key-in-ignition status to determine when to sound the chime. When the ignition key is inserted in the ignition lock cylinder, a ground signal is sent to the IC through the clockspring and the key-in-ignition switch. The IC then looks at the ignition switch position by monitoring for a voltage applied to the run/start input circuit. If the cluster does not see a voltage on the run/start circuit and the key-in-ignition is grounded, it looks to see if the driver door ajar input is grounded through the door ajar switch. If all 3 of these conditions exist, the IC sounds the key-in-ignition warning chime.
- DTC B1352 (Ignition Key-In Circuit Fault) - a continuous DTC that sets in the IC if the IC detects an open on the key-in-ignition circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Key-in-ignition warning switch
- IC
PINPOINT TEST AD: THE KEY-IN-IGNITION WARNING CHIME IS INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
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AD1 CHECK THE DOOR AJAR WARNING INDICATOR
- Ignition ON.
- With the driver door opened, observe the door ajar warning indicator.
- Does the door ajar warning indicator operate correctly?
Yes
GO to AD2.
No
GO to Pinpoint Test U. Pinpoint Test U: The Door Ajar Warning Indicator Is Never/Always On
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AD2 CHECK THE KEY-IN-IGNITION SWITCH OPERATION
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC key-in-ignition PID (IGN_KEY). Monitor the key-in-ignition PID.
- Does the PID indicate the ignition key is in?
Yes
GO to AD6.
No
GO to AD3.
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AD3 CHECK THE KEY-IN-IGNITION SWITCH OPERATION
- Ignition OFF.
- Disconnect: Clockspring C218a.
- Ignition ON.
- Connect a fused jumper wire between the clockspring C218a-10, circuit CDC30 (BU/GY), harness side and ground.
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC key-in-ignition PID (IGN_KEY). Monitor the key-in-ignition PID.
- Does the PID indicate the ignition key is in with the jumper wire connected?
Yes
REMOVE the jumper wire. GO to AD4.
No
REMOVE the jumper wire. GO to AD5.
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AD4 CHECK THE KEY-IN-IGNITION WARNING SWITCH CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Key-In-Ignition Warning Switch.
- Measure the resistance between the lower clockspring pin 10, component side and the key-in-ignition warning switch, component side.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new key-in-ignition warning switch. REFER to Key-In-Ignition Warning Switch Key-In-Ignition Warning Switch. TEST the system for normal operation.
No
REPAIR the circuit for an open. TEST the system for normal operation.
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AD5 CHECK THE KEY-IN-IGNITION INPUT CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: IC C220a.
- Measure the resistance between the IC C220a-4, circuit CDC30 (BU/GY), harness side and the clockspring C218a-10, circuit CDC30 (BU/GY), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to AD6.
No
REPAIR circuit CDC30 (BU/GY) for an open. TEST the system for normal operation.
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AD6 CHECK FOR CORRECT IC OPERATION
- Disconnect all the IC connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the IC 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 IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). 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.
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