Circuit Description
This DTC checks for an abnormal VSS input to the cruise control module or a malfunction within the cruise control module.
Diagnostic Aids
Check for the following:
| • | DTCs in the powertrain control module |
| • | If the speedometer operates normally, the VSS is OK |
| • | Open or high resistance in the PPL/WHT wire between the left instrument panel junction block C 3 and the cruise control module |
| • | Faulty cruise control module |
An intermittent may be caused by a poor connection, rubbed through wire insulation or a wire broken inside the insulation. Inspect the following harness connectors for backed out terminals, improper mating, broken lock, improperly formed or damaged terminals or for poor terminal-to-wire connection before replacing the suspect component:
| • | Cruise control module connector |
| • | Left instrument panel junction block C 3 |
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Cruise Control Schematics | ||||
1 | Did you perform the Diagnostic System Check - Cruise Control ? | -- | Go to Step 2 | |
Does the reading vary within the specified range? | 0-8 V | Go to Step 3 | Go to Step 4 | |
3 | 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 6 | -- |
4 | Repair the open or high resistance in the PPL/WHT wire between the cruise control module and the left instrument panel junction block C 3. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 6 | -- |
5 | Replace the cruise control module. Refer to Cruise Control Module Replacement . Is the repair complete? | -- | Go to Step 6 | -- |
6 |
Does the CRUISE indicator lamp flash the same trouble code? | -- | Go to Step 2 | -- |
