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.
|