For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | Go to Instrument Cluster System Check
2 | Are there any other gauges inoperative? | -- | Go to Step 3 | Go to Step 4
3 |

1. Turn the ignition switch to the ON position.
2. Using a test lamp, backprobe the instrument cluster assembly C1 cavity 2 to ground. Refer to Instrument Cluster Replacement for access.

Does the test lamp illuminate?

--

Go to Step 5

Go to Step 6

4 |

1. Start and Idle the engine.
2. Obtain normal operating temperature.
3. Using a J 39200 DMM, backprobe the connector C3 cavity 3 of the instrument cluster, measure the frequency of the tachometer .

Is the measured frequency within the specified range?

18-25 Hz

Go to Step 9

Go to PCM Controlled Tachometer Diagnosis

5 | Replace the instrument cluster assembly printed circuit. Refer to Printed Instrument Cluster Circuit Replacement . Is the repair complete? | -- | Go to Instrument Cluster System Check | --
6 | Using a test lamp, backprobe the junction block 3, C2 cavity 18 to ground. Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 8
7 | Repair the open in the RED/BLU wire between the junction block 3, C2 cavity 18 and the instrument cluster assembly C1 cavity 2. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Instrument Cluster System Check | --
8 | Replace the junction block 3. Refer to Instrument Panel Wiring Harness Replacement . Is the repair complete? | -- | Go to Instrument Cluster System Check | --
9 | Inspect the instrument cluster assembly printed circuit for damage. Is there any damage? | -- | Go to Step 5 | Go to Step 10
10 | Replace the tachometer. Refer to Tachometer Replacement . Is the repair complete? | -- | Go to Instrument Cluster System Check | --