Speedometer and/or Odometer Inaccurate or Inoperative
Speedometer and/or Odometer Inaccurate or Inoperative
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Instrument Cluster Schematics Connector End View Reference: Engine Control Module Connector End Views for the 4.4L engine or Engine Control Module Connector End Views for the 4.6L engine |
||||
| 1 | Did you perform the Vehicle Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
- | Go to Step 3 | Go to Step 4 |
| 3 | Does the odometer operate properly? | - | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 18 |
| 4 |
|
- | Go to Step 10 | Go to Step 5 |
| 5 |
|
- | Go to Step 11 | Go to Step 6 |
| 6 |
|
- | Go to Step 12 | Go to Step 7 |
| 7 |
|
9.0 V | Go to Step 9 | Go to Step 8 |
| 8 | Test the vehicle speed signal circuit for the following between the instrument panel cluster (IPC) and the ECM.
Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 13 |
| 9 | Test the vehicle speed signal circuit for a short to voltage between the IPC and the ECM. Refer to Circuit Testing
and to Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 14 |
| 10 | Inspect for poor connections at the harness connector of the radio. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 15 |
| 11 | Inspect for poor connections at the harness connector of the HUD. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 16 |
| 12 | Inspect for poor connections at the harness connector of the rear object alarm detection module. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 17 |
| 13 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 18 |
| 14 | Inspect for poor connections 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 20 | Go to Step 19 |
| 15 | Replace the radio. Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 20 | - |
| 16 | Replace the HUD Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 20 | - |
| 17 | Replace the rear object alarm detection module. Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 20 | - |
| 18 | Replace the IPC. Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 20 | - |
| 19 | Replace the ECM. Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 20 | - |
| 20 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 2 |