Were you sent here from the Gauge System Check?

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Go to Step 2

Go to Gauge System Check

Using a scan tool, attempt to establish communications with the PCM.

Does the scan tool communicate with the PCM?

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Go to Step 3

Go to Powertrain On Board Diagnostic (OBD) System Check

Is a DTC P0500, P0502, P0503, or P0608 stored in the PCM?

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Go to Powertrain On Board Diagnostic (OBD) System Check

Go to Step 4

Using a scan tool, attempt to establish communications with the IPC.

Does the scan tool communicate with the IPC?

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Go to Step 5

Go to Diagnostic System Check - Instrument Cluster

1. Using a scan tool, select IPC data display and monitor vehicle speed.
2. Test drive the vehicle as needed.

Is the scan tool able to display correct vehicle speed?

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Go to Step 6

Go to Step 7

Compare the IPC vehicle speed data display on the scan tool with the speedometer gauge display.

Does the scan tool display correspond with the speedometer?

Within 4.8 km/h

(3 mph)

System OK

Go to Step 9

1. Using a scan tool, select PCM data display and monitor vehicle speed.
2. Test drive the vehicle as needed.

Is the scan tool able to display correct vehicle speed?

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Go to Step 8

Go to Powertrain On Board Diagnostic (OBD) System Check

Locate and repair open or short in CKT 817.

Is the circuit repair complete?

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Go to Step 10

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Replace the IPC assembly. Refer to Instrument Cluster Replacement .

Is the replacement complete?

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Go to Step 10

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1. Turn OFF the ignition switch.
2. Reconnect or install any connectors or components that were disconnected or removed.
3. Turn ON the ignition switch.

Is the repair complete?

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Go to Gauge System Check

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