939003583 - D074 CRUISE CONTROL SYSTEM DOES NOT GO OFF WHEN BRAKE PEDAL PRESSED
| 1 | BRAKE PEDAL SWITCH CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
|---|---|---|---|---|
| Check that the brake pedal switch is working properly | Move on to Step 2 | 1. Brake pedal switch connection faulty | 1. Repair the engine connections: See E5060 CRUISE CONTROL | |
| 2. Brake pedal switch faulty | 2. Replace the brake pedal switch Op. 5550D10 BRAKE LIGHT SWITCH - R+R | |||
| 2 | ENGINE MANAGEMENT CONTROL UNIT CONNECTIONS CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
| With the ignition key in the ON position and the brake pedal pressed, check for a voltage signal at the engine management control unit coming from the brake switch: See E5060 CRUISE CONTROL | Move on to Step 3 | No voltage detected | Repair the engine connections See E5060 CRUISE CONTROL | |
| 3 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
| Check that the fault is no longer present by carrying out See Test 5580AE CRUISE CONTROL OPERATION ROAD TEST | End of diagnosis | The fault persists: control unit defective | Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R |