Checking Wiring
-- Remove the Engine Control Module (ECM) - J623 -. Refer to appropriate service information.
-- Using a Multimeter, Check the Mass Air Flow (MAF) Sensor -G70- electrical harness connector to the Fuse, (Refer to applicable wiring diagram for fuse positions) for an open circuit.
| Mass Air Flow (MAF) Sensor -G70- electrical harness connector terminals | Measure to: |
|---|---|
| 1 | Fuse, Refer to applicable wiring diagram for fuse location and number. |
| 2 | Engine Control Module (ECM) - J623 - electrical harness connector T94/ 20 |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring connection for an open or short circuit.
-- Check the wiring connection for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection and replace any open fuses
-- Go to Final Procedures
If the specified value was obtained:
-- If no faults were found Replace the Engine Control Module (ECM) - J623 -. Refer to appropriate service information.
-- Go to Final Procedures
-- Remove the Motronic Engine Control Module (ECM) - J623 -. Refer to appropriate service information.
-- Using a Multimeter, Check the Mass Air Flow (MAF) Sensor -G70- electrical harness connector to the Motronic Engine Control Module (ECM) -J623 - electrical harness connector T94 for an open circuit.
| Mass Air Flow (MAF) Sensor -G70- electrical harness connector terminals | Engine Control Module - J623 - electrical harness connector T94 terminals |
|---|---|
| 3 | 22 |
| 4 | 42 |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring connection for an open circuit, short circuit to Battery positive or Ground
-- Check the wiring connection for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
-- Go to Final Procedures
If the specified value was obtained:
-- Replace the Mass Air Flow (MAF) Sensor -G70-. Refer to appropriate service information.