Schematic Reference: Instrument Cluster Schematics

Did you perform the Instrument Panel Cluster Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

1. Turn the ignition ON, with the engine OFF.
2. Observe the CHECK GAGES indicator in the IPC.

Does the CHECK GAGES indicator illuminate during the displays test?

Go to Step 4

Go to Step 3

1. Turn the ignition OFF.
2. Disconnect C210.
3. Connect a 3 ampere fused jumper between the check gages indicator control circuit and a good ground.
4. Turn the ignition ON, with the engine OFF.

Does the CHECK GAGES indicator illuminate in the IPC?

Go to Step 5

Go to Step 6

Test the check gages indicator control circuit for an open or for a high resistance between the multifunction alarm module (MFAM) and S244. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 7

Test the check gages indicator control circuit for an open or for a high resistance between C210 and the PCM. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 9

Test the check gages indicator control circuit for an open or for a high resistance between C210 and the IPC. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 8

Inspect for poor connections at the harness connector of the MFAM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 10

Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 11

Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 12

Replace the MFAM. Refer to Multifunction Alarm Module Replacement .

Did you find and correct the condition?

Go to Step 13

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Replace the IPC. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

Go to Step 13

--

Important:: Program the replacement PCM.

Replace the PCM. Refer to Powertrain Control Module Replacement in Engine Controls - 8.1L.

Did you complete the replacement?

Go to Step 13

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2

Schematic Reference: Instrument Cluster Schematics

Did you perform the Instrument Panel Cluster Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

1. Turn the ignition ON, with the engine OFF.
2. Observe the CHECK GAUGES indicator in the IPC.

Does the indicator illuminate briefly during the displays test?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Turn the ignition OFF.
2. Disconnect the engine oil pressure switch.
3. Connect a 3 amp fused jumper wire between the signal circuit of the engine oil pressure switch and a good ground.
4. Turn the ignition ON, with the engine OFF.

Does the CHECK GAUGES indicator illuminate in the IPC?

Go to Step 11

Go to Step 4

Test the engine oil pressure switch signal circuit for an open or for a high resistance between the multifunction alarm module (MFAM) and the engine oil pressure switch. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 5

1. Turn the ignition OFF.
2. Disconnect the engine coolant temperature (ECT) switch.
3. Connect a 3 amp fused jumper wire between the signal circuit of the ECT switch and a good ground.
4. Turn the ignition ON, with the engine OFF.

Does the CHECK GAUGES indicator illuminate in the IPC?

Go to Step 12

Go to Step 6

Test the ECT switch signal circuit for an open or for a high resistance between the MFAM and the ECT switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 7

1. Turn the ignition OFF.
2. Disconnect the MFAM connector C1.
3. Connect a 3 amp fused jumper wire between the check gauges indicator control circuit and a good ground.
4. Turn the ignition ON, with the engine OFF.

Does the CHECK GAUGES indicator illuminate in the IPC?

Go to Step 10

Go to Step 8

Test the check gauges indicator control circuit for an open or for a high resistance between the MFAM and the IPC. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 9

Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 13

Inspect for poor connections at the harness connector of the MFAM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 14

Replace the engine oil pressure switch. Refer to Engine Oil Pressure Sensor or Switch Replacement .

Did you complete the replacement?

Go to Step 15

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Replace the ECT switch. Refer to Engine Coolant Temperature Sensor Replacement in Engine Cooling.

Did you complete the replacement?

Go to Step 15

--

Replace the IPC. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

Go to Step 15

--

Replace the MFAM. Refer to Multifunction Alarm Module Replacement .

Did you complete the replacement?

Go to Step 15

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2