Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Instrument Cluster Schematics | |||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |||||||
2 |
Does the engine RPM indicator perform a self test by the LEDs briefly turning ON and OFF? | Go to Step 5 | Go to Step 3 | ||||||
3 |
Does the test light illuminate? | Go to Step 4 | Go to Step 6 | ||||||
4 | Connect a test lamp between the engine RPM indicator ignition 1 voltage circuit and the engine RPM indicator ground circuit. Does the test light illuminate? | Go to Step 9 | Go to Step 7 | ||||||
5 | Test the engine speed signal circuit of the RPM indicator for the following:
Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 8 | ||||||
6 | Test the ignition 1 voltage circuit of the engine RPM indicator for an open or for a high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 9 | ||||||
7 | Test the ground circuit of the engine RPM indicator for an open or for a high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 9 | ||||||
8 | Inspect for a poor connection at the harness connector of the ECM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 10 | ||||||
9 | Replace the engine RPM indicator. Refer to RPM indicator replacement. Did you complete the replacement? | Go to Step 11 | -- | ||||||
10 | Replace the ECM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 4 | -- | ||||||
11 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 | ||||||
