Important:: Perform a diagnostic system check and repair DTC(s) P0500 or P0501 before performing the following diagnostic.

Did you perform the OBD II System Check?

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Go to Step 2

1. Remove the I/P Cluster.

•	(Gas) Disconnect Vehicle Control Module (VCM) connector C4.

•	(Diesel) Disconnect Powertrain Control Module (PCM) connector C2 and the Vehicle Speed Signal Buffer (VSSB).

2. Disconnect the Overspeed Alarm on Export vehicles.
3. Connect a DMM (continuity) between cavity 14 of the I/P Cluster and ground.

Is continuity present?

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Go to Step 3

Go to Step 4

Locate and repair the short to ground in CKT 389 (DK GRN) between the VCM (Gas) or the Vehicle Speed Signal Buffer and PCM (Diesel). If an Export Module, be sure to check between C223, at the Convenience Center and the Audio Alarm Module. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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System OK

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Connect a DMM (continuity) between cavity 14 of the I/P Cluster and VCM connector C4, cavity 4 (Gas), or PCM connector C2, cavity A6 and VSSB cavity 15.

Is continuity present?

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Go to Step 6

Go to Step 5

Locate and repair the open in CKT 389 (DK GRN) between the I/P Cluster and the VCM (Gas), or PCM and VSSB (Diesel). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Instrument Cluster System Check

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Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

Go to Instrument Cluster System Check

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