Reducing Agent Metering System Control Module -J880-, CHECKING
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 .
At the time of writing, the Reduction Agent Tank Module Assembly is replaced as a unit when an individual component of the module assembly is faulty. This may change at a later date. Check with parts for availability of components.
Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.
For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.
Special tools and workshop equipment required
- Multimeter
- Wiring diagram
Test Requirements
The reducing agent metering system control module -J880- is located on the right side under the rear bench seat, directly below the floor covering.
Press the floor covering to the side and disconnect the connector -1-.
- The ignition switched off.
Checking voltage
-- Turn the ignition switch ON.
-- Measure the voltage of the Reducing Agent Metering System Control Module -J880- harness connector (female terminals) T30/30 to Ground.
Specified value: 12.5 V (+/- 0.9 V)
-- Measure the voltage of the Reducing Agent Metering System Control Module -J880- harness connector T30/25 to Batt. plus.
Specified value: 12.5 V (+/- 0.9 V)
If any of the specified values were Not obtained:
-- Check the wiring for a short circuit to each other, Battery voltage, Ground or high resistance.
-- If necessary, repair the faulty wiring connection.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
If the specified value was obtained:
Checking wiring
-- Remove the Engine Control Module -J623-. Refer to the Repair Manual.
-- Using a multimeter, check the Reducing Agent Metering System Control Module -J880- electrical harness connector to the Engine Control Module -J623- electrical harness T91 connector for resistance.
| Reducing Agent Metering System Control Module -J880- electrical harness connector (female terminals) | Engine Control Module -J623- electrical harness connector T91 terminals or fuse location |
|---|---|
| 8 | 36 |
| 9 | 37 |
| 11 | 29 |
| 19 | 62 |
| 20 | 29 |
| 22 | 28 |
| 24 | 11 |
| 25 | 22 |
Specified value: 1.5 Ω Max.
If the specified value was not obtained:
-- Check the wiring for a short circuit to each other, Battery voltage, Ground or high resistance.
-- If necessary, repair the faulty wiring connection.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
If no malfunction is detected in the wiring and the voltage readings were not correct:
-- Replace the Engine Control Module -J623-. Refer to the service information for removal and installation procedures.
Final Procedures
After the 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 .