Refer to the following Instrument Cluster Schematics for diagnostic aid.
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Power
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Circuit Description
When the ignition switch is in the UNLOCK position, certain Class 2 messages do not transmit. The instrument cluster suspends the operation of the indicators and the gauges that are dependent on these messages until the ignition switch is no longer in the UNLOCK position.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
The ignition 0 voltage circuit is less than a calculated voltage for more then 1 second.
Conditions for Clearing the DTC
| • | The ignition 0 voltage circuit is greater than 75 percent of battery positive voltage. |
| • | A history DTC will clear after 100 consecutive fault free ignition cycles. |
| • | History and Current DTCs can be cleared by using the scan tool. |
Diagnostic Aids
| • | An intermittent problem may be caused by a poor connection, break in the wire insulation exposing the internal wire, or a wire that is broken inside the insulation. |
| • | If the ignition 0 voltage is low at the instrument cluster and the engine is not running, the odometer and PRNDL displays will not be illuminated and the instrument cluster will not communicate with the scan tool. The season odometer will display if the tripometer switch is pressed. The instrument cluster will communicate with the scan tool until the tripometer switch is released. |
| • | DTC 1367 can only be read by the scan tool as a history code once the fault is removed. |
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Does the scan tool communicate with the instrument cluster? | -- | Go to Diagnostic Aids | Go to Step 2 |
2 |
Did you find and correct the condition? | -- | Go to Step 5 | Go to Step 3 |
3 | Test for poor connections at the harness connector of the instrument cluster. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 5 | Go to Step 4 |
4 | Replace the instrument cluster. Refer to Instrument Cluster Replacement . Did you complete the replacement? | -- | Go to Step 5 | -- |
5 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
