Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
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This step tests for a malfunctioning cruise control module that is interrupting the vehicle speed signal circuit.
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This step tests for a malfunctioning HUD that is interrupting the vehicle speed signal circuit.
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This step tests for the proper voltage from the IPC.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Instrument Cluster Schematics | ||||
1 | Did you perform the Instrument Cluster Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does the Vehicle Speed Sensor parameter match the speedometer display? | -- | Go to Step 3 | Go to Step 4 |
3 | Does the odometer operate properly? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 15 |
Does the Vehicle Speed Sensor parameter match the speedometer display? | -- | Go to Step 9 | Go to Step 5 | |
Does the Vehicle Speed Sensor parameter match the speedometer display? | -- | Go to Step 10 | Go to Step 6 | |
Does the voltage measure greater than the specified value? | 9.0 V | Go to Step 8 | Go to Step 7 | |
7 | Test the vehicle speed signal circuit for an open, a high resistance, or a short to ground between the IPC and the PCM. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 11 |
8 | Test the vehicle speed signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 12 |
9 | Inspect for poor connections at the harness connector of the cruise control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 13 |
10 | Inspect for poor connections at the harness connector of the HUD. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 14 |
11 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 15 |
12 | Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 16 |
13 | Replace the cruise control module. Refer to Cruise Control Module Replacement in Cruise Control. Did you complete the replacement? | -- | Go to Step 17 | -- |
14 | Replace the HUD. Refer to Head Up Display Module Replacement . Did you complete the replacement? | -- | Go to Step 17 | -- |
15 | Replace the IPC. Refer to Instrument Cluster Replacement . Did you complete the replacement? | -- | Go to Step 17 | -- |
16 |
Important: Program the replacement PCM. Replace the PCM. Refer to Powertrain Control Module Replacement in Engine Controls. Did you complete the replacement? | -- | Go to Step 17 | -- |
17 | Operate the system in order to verify the repair. Use the scan tool in order to clear the DTC's that may have set in other modules during diagnosis. Did you correct the condition? | -- | System OK | Go to Step 2 |
