Checking Wiring
-- Remove the Engine Control Module (ECM) -J623-. Refer to the Repair Information.
-- Using a multimeter, check the Engine Speed (RPM) Sensor -G28- electrical harness connector terminals to the Engine Control Module (ECM) -J623- electrical harness connector T60 terminals for an open circuit. Refer to the Wiring Diagrams
| Engine Speed (RPM) Sensor -G28- electrical harness connector terminals: | Engine Control Module (ECM) -J623- electrical connector T60 terminals: |
|---|---|
| 1 | 52 (Golf) or 51 (EOS) |
| 2 | 37 (Golf) or 36 (EOS) |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring for an open circuit, high resistance or a short circuit to Battery (+).
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring:
-- Remove the Engine Speed (RPM) Sensor -G28- and check the sensor wheel for proper seating, damage and run out. Refer to the Repair Information.
If the sensor wheel is OK:
-- Replace the Engine Control Module (ECM) -J623-. Refer to the Repair Information.