Fuel Tank Leak Detection Control Module -J909-, Checking
The following procedure is used to diagnose the Fuel Tank Leak Detection Control Module -J909-.
Observe all safety precautions: SAFETY PRECAUTIONS
View clean working conditions: CLEAN WORKING CONDITIONS
Prior to repair work, perform a preliminary check to verify the condition. Refer to. PRELIMINARY CHECK
Use only gold-plated terminals when servicing terminals in harness connector of Fuel Tank Leak Detection Control Module -J909-.
Special tools and workshop equipment required
- Multimeter.
- Wiring diagram.
Test requirements
- Fuse is OK.
- Battery voltage at least 12.5 volts.
- All electrical consumers such as, lights and rear window defroster, switched off.
- Vehicles with automatic transmission, shift selector lever into position "P" or "N".
- A/C switched off.
- Ground (GND) connections between engine/transmission/chassis OK.
- Coolant Temperature at least 80° C.
- Ignition switched off.
Start diagnosis
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
-- Disconnect the Fuel Tank Leak Detection Control Module -J909- electrical harness connector.
Checking voltage supply
-- Using a multimeter, check the Fuel Tank Leak Detection Control Module -J909- electrical harness connector terminal 4 to engine Ground (GND) for voltage.
-- Switch the ignition on.
Specified value: battery voltage.
-- switch the ignition off.
If specified value was not obtained:
Checking electrical circuit
-- Remove the Engine Control Module 2 -J624-. Refer to Repair Information.
-- Using a multimeter, check the Fuel Tank Leak Detection Control Module -J909- electrical harness connector terminals to the Engine Control Module 2 -J624- electrical harness connector T94a terminals for an open circuit.
| Fuel Tank Leak Detection Control Module -J909- electrical harness connector T5p terminals: | Engine Control Module 2 -J624- electrical connector T94a terminals: |
|---|---|
| 2 | 26 |
| 3 | 50 |
| 4 | Engine Control Module 2 -J624- fuse. Refer to the appropriate wiring diagram. |
Specified value: 1.5 Ω max.
If the specification 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, lose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring and if the voltage supply was OK:
-- Replace Fuel Tank Leak Detection Control Module -J909-. Refer to Repair Information.
If no malfunction is detected in the wiring and if the voltage supply was not OK:
-- Replace the Motronic Engine Control Module 2 -J624-. Refer to Repair Information.
-- Assembly is performed in the reverse order of removal.
Final procedures
After 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 .