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TEST ACTION APPLICABILITY 4 Turn the ignition on. t in Sensors, read Vehicle Speed. Have an assistant drive the vehicle while you are observing the Vehicle Speed Signal t, note any rapid changes (signal dropouts) in the reading that do not correspond with actual vehicle speed. All Yes → Go To 5 No → Refer to symptom list for problems related to the Vehicle Speed Sensor. 5 Turn the ignition on. t in Inputs/Outputs, read the Primary and Secondary brake switch states while pressing and releasing the Brake Pedal several times. All Yes → Go To 6 No → Refer to symptom list for problems related to Brake Switch Signal. 6 Turn the ignition on. t in Inputs/Outputs, read the Clutch switch states while pressing and releasing the Clutch Pedal several times. All Yes → Go To 7 No → Go To 8 7 WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A All Yes → Repair as necessary. Perform SPEED CONTROL VERIFICATION - VER-4. No → Replace and program the Engine Control Module in accordance with the Service Information. 231 DRIVEABILITY - DIESEL *CHECKING THE SPEED CONTROL OPERATION — Continued |