Schematic Reference: Instrument Cluster Schematics

Did you review the Instrument Panel, Gages and Console Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Instrument Panel, Gages and Console

Verify that the speedometer and the odometer inaccurate.

Does the system operate normally?

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

Go to Step 3

Using a scan tool, test for a DTC P0500.

Does the scan tool register a DTC P0500?

Go to one of the following procedures:

Go to Step 4

Does the speedometer register any change in position?

Go to Step 5

Go to Step 12

1. Raise the drive wheels.
2. Support the lower control arms so that the drive axles are in a horizontal (straight) position.
3. Start and idle the engine.
4. Accelerate the car so the speedometer reads around 32 km/h (20 mph).
5. Measure the frequency of the output of the VSS cavity 3.

Is the measured frequency within the specified range?

Go to Step 6

Go to Step 7

Test the WHT/BLU wire between the VSS connector cavity 3 and the instrument cluster assembly connector C2 cavity 10 for an open.

Is an open condition present?

Go to Step 9

Go to Step 8

1. Turn the vehicle OFF.
2. Replace the VSS. Refer to one of the following procedures:

•	Vehicle Speed Sensor Replacement in Manual Transmission - MB4 and MB5

•	Vehicle Speed Sensor Replacement in Automatic Transmission - 3 Speed - MB3

Did you complete the repair?

Go to Step 23

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Inspect the instrument cluster assembly printed circuit for damage.

Is the printed circuit damaged?

Go to Step 11

Go to Step 10

Repair the open in the VSS signal input circuit between the VSS connector cavity 3 and the instrument cluster assembly connector C2 cavity 10. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 23

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Replace the speedometer/odometer. Refer to Speedometer Replacement .

Did you complete the repair?

Go to Step 23

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Replace the instrument cluster printed circuit. Refer to Printed Instrument Cluster Circuit Replacement .

Did you complete the repair?

Go to Step 23

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1. Turn the ignition switch to the ON position.
2. Using a test lamp, check the VSS cavity 1 to ground.

Does the test lamp illuminate?

Go to Step 13

Go to Step 14

1. Turn the ignition switch to the OFF position.
2. Disconnect the VSS connector.
3. Test for continuity between the VSS connector cavity 2 to ground.

Is continuity present?

Go to Step 21

Go to Step 16

Repair the open in the ignition voltage circuit between the VSS cavity 1 and the SP258 C2. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 23

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Replace the VSS. Refer to one of the following procedures:

Did you complete the repair?

Go to Step 23

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Are any other gauges inaccurate?

Go to Step 18

Go to Step 17

Test the RED/WHT wire between the VSS cavity 2 and the instrument cluster assembly connector C2 cavity 4 for an open.

Is a short condition present?

Go to Step 20

Go to Step 8

Test the BRN wire between the instrument cluster assembly connector C3 cavity 15 and ground for a short.

Is a short condition present?

Go to Step 19

Go to Step 8

Repair the short in the BRN wire between the instrument cluster assembly connector C3 cavity 15 and ground. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 23

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Repair the open in the RED/WHT wire between the VSS cavity 2 and the instrument cluster assembly connector C2 cavity 4. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 23

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Test the VSS signal input circuit between the VSS and the instrument cluster for an open.

Is an open condition present?

Go to Step 22

Go to Step 15

Repair the open in the VSS signal input circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 23

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3