NOX Sensor Control Module - J583- / NOX Sensor Control Module 2 - J881-, Checking
General Description
The Nox Sensor Control Module -J583- / Nox Sensor Control Module 2 -J881- monitors the raw emissions of NOx in the exhaust and calculates the amount of AdBlue to inject into the exhaust system upstream of the SCR catalyst.
The Nox Sensor Control Module -J583- contains the following component:
The Nox Sensor Control Module 2 -J881- contains the following component:
The Nox Sensor Control Module -J583- components cannot be serviced separately, and they must be serviced as a unit.
The Nox Sensor Control Module 2 -J881- components cannot be serviced separately, and they must be serviced as a unit.
Special tools and workshop equipment required
- Multimeter.
- Wiring Diagram.
- Scan Tool.
Test requirements
- Fuses OK.
- Battery voltage OK.
- Switch OFF all electrical and electronic accessories.
- Vehicles with automatic transmission, ensure the selector lever position is in "P".
- Vehicles with manual transmission, ensure the shifter lever position is in "N" with the parking brake applied.
- Observe all safety precautions: SAFETY PRECAUTIONS
.
- View clean working conditions: CLEAN WORKING CONDITIONS
.
Test Procedure
| Step |
Procedure |
Result / Action to Take |
| 1 |
- PERFORM: Preliminary Check to verify the customers complaint. Refer to PRELIMINARY CHECK
.
-- Was Complaint verified? |
-- YES:
-- NO:
- GATHER more information from customer about the complaint.
|
| 2 |
- IGNITION: OFF.
- DISCONNECT: Nox Sensor Control Module -J583- / Nox Sensor Control Module 2 -J881- harness connector.
- IGNITION: ON.
- CHECK: Nox Sensor Control Module -J583- / Nox Sensor Control Module 2 -J881- harness connector terminals 1 to 2 (and 5 if equipped) for voltage.
- SPECIFIED VALUE: Battery voltage.
- IGNITION: OFF.
-- Were Values obtained? |
-- YES:
-- NO:
- PERFORM: Visual Inspection of wiring and component.
- CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals.
- REPAIR: Faulty wiring or connector.
- GO TO: Step 4.
|
| 3 |
- REMOVE: Engine Control Module - J623-. Refer to appropriate Service Information.
- CHECK: Nox Sensor Control Module -J583- / Nox Sensor Control Module 2 -J881- harness connector terminal 3 to the Engine Control Module - J623- harness connector T91 / 52 for resistance.
- CHECK: Nox Sensor Control Module -J583- / Nox Sensor Control Module 2 -J881- harness connector terminal 4 to the Engine Control Module - J623- harness connector T91 / 51 for resistance.
- SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
-- Were Values obtained? |
-- YES:
- REPLACE: Nox Sensor Control Module -J583- / Nox Sensor Control Module 2 -J881-. Refer to appropriate Service Information.
- GO TO: Step 4.
-- NO:
- PERFORM: Visual Inspection of wiring and component.
- CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals.
- REPAIR: Faulty wiring or connector.
- GO TO: Step 4.
|
| 4 |
- Final Procedure
- Perform a road test to verify repair.
-- Does the original DTC return? |
-- YES:
- CHECK: Engine Control Module -J623- harness connector for any damaged, pushed-out pins.
- REPAIR: As necessary.
- If all electrical connections are OK:
- REPLACE: Engine Control Module -J623-. Refer to appropriate Service Information.
- Clear the DTC's. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY
.
- Repair is complete. Generate Readiness Code. Refer to READINESS CODE
.
- Return vehicle to Customer.
-- NO:
- Perform the diagnostic procedure for any DTC's.
- If no DTC's return, the repair is complete.
- Return vehicle to customer.
|