Checking wiring
If the manufacturers test box is being used, perform the following step.
-- Install the test box.
If the manufacturers test box is not being used, perform the following step.
-- Remove the Motronic Engine Control Module (ECM) -J623-. Refer to appropriate service information.
-- Using a Multimeter, check the Electronic Power Control (EPC) Throttle Drive -G186- at Throttle Valve Control Module -J338- electrical harness connector terminals to the Motronic Engine Control Module (ECM) -J623- electrical harness connector T60 terminals for an open circuit according to the wiring diagram.
| Throttle Valve Control Module -J338- electrical harness connector terminals | Motronic Engine Control Module (ECM) -J623- electrical connector T60 terminals or test box socket |
|---|---|
| 2 | 12 |
| 6 | 44 |
Specified value: 1.5 Ω max.
If the specified value was Not obtained:
-- Check the wiring for a short circuit to each other, Battery voltage and Ground (GND).
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
-- Go to Final procedures
If the specification value was obtained:
-- Replace the Motronic Engine Control Module (ECM) -J623-. Refer to appropriate service information.
-- Go to Final procedures
If the manufacturers test box is being used, perform the following step.
-- Install the test box.
If the manufacturers test box is not being used, perform the following step.
-- Remove the Motronic Engine Control Module (ECM) -J623-. Refer to appropriate service information.
-- Using a Multimeter, check the Electronic Power Control (EPC) Throttle Drive -G186- at Throttle Valve Control Module -J338- electrical harness connector terminals to the Motronic Engine Control Module (ECM) -J623- electrical harness connector T60 terminals for an open circuit according to the wiring diagram.
| Throttle Valve Control Module -J338- electrical harness connector terminals | Motronic Engine Control Module (ECM) -J623- electrical connector T60 terminals or test box socket |
|---|---|
| 1 | 41 |
| 3 | 1 |
| 4 | 24 |
| 5 | 16 |
Specified value: 1.5 Ω max.
If the specified value was Not obtained:
-- Check the wiring for a short circuit to each other, Battery voltage and Ground (GND).
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
-- Go to Final procedures
If the specification value was obtained:
-- Replace the Motronic Engine Control Module (ECM) -J623-. Refer to appropriate service information.
-- Go to Final procedures
Final procedures
-- After the repair work, the following work steps must be performed in the following sequence:
- Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
- If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
- If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .