Clock Malfunction

Clock Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information






Circuit/System Description

The instrument panel cluster (IPC) is equipped with an analog clock. The analog clock utilizes the clock battery positive voltage circuit and the clock ground circuit to operate. An open circuit condition, a high resistance or a short to ground in the battery positive circuit or the ground circuit will cause the clock not to operate properly.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the clock.
2. Ignition OFF, test for less than 1 ohm of resistance between the clock ground circuit and ground.

• If greater than 1 ohm, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the clock B+ circuit and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If all circuits test normal, replace the clock.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Clock Replacement