Anti-Dive Control Stops Operating
- Check service data on stoplight switch. See SERVICE DATA INSPECTION under TESTING & DIAGNOSIS. If stoplight switch service data is okay, go to next step. If stoplight switch service data does not test satisfactorily, go to step 5).
- Select TOUR mode using ECS switch. Using Multi-Use Tester (MUT), enter a simulated vehicle speed of 62 MPH. Refer to MUT instructions for specific procedure. Using MUT, ensure service data indication for items No. 61, 62, 63 and 64 is SOFT.
- While monitoring service data indication for item No. 61, depress brake pedal and reduce simulated speed from MUT. Service data indication should change to HARD until simulated vehicle speed falls below 50 MPH, and then indication should change to SOFT. Repeat this step for service data items No. 62, 63 and 64.
- If any service data items do not test as specified, replace ECS control unit. If all service data items test as specified, anti-dive control is functioning properly.
- Turn ignition on, and depress brake pedal. Ensure stoplight comes on. If stoplight comes on, go to step 7). If stoplight does not come on, check continuity between stoplight switch harness connector terminal No. 3 (Green wire) and ECS control unit harness connector terminal No. 58 (Green wire). See Fig 1.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
- If continuity is present, replace ECS control unit. If continuity is not present, repair harness between stoplight switch and ECS control unit.
- Disconnect stoplight switch harness connector. Measure voltage between ground and stoplight switch harness connector terminal No. 2 (Red/Black wire). If battery voltage is present, go to next step. If battery voltage is not present, repair harness.
- Remove and test stoplight switch. See STOPLIGHT SWITCH under COMPONENT TESTING. If stoplight switch is okay, replace ECS control unit. If stoplight switch is faulty, replace stoplight switch.