Checking Resistance
-- Measure the resistance of the Reducing Agent Pump Heater -Z103- connector terminals 1 and 2.
Specified value: 4.0 Ω (+/- 1.5 Ω)
If the specification was Not obtained:
-- replace the Reducing Agent Pump -V437- / Reducing Agent Pump Heater -Z103- assembly.
-- Go to Final Procedures
If the specified value was obtained:
-- Remove the Reducing Agent Heater Control Module -J891-. Refer to appropriate service information.
-- Using a Multimeter, Check the Reducing Agent Pump -V437- / Reducing Agent Pump Heater -Z103- electrical harness connector to the Reducing Agent Heater Control Module -J891- electrical harness connector T5h for an open circuit.
| Reducing Agent Pump -V437- / Reducing Agent Pump Heater -Z103- electrical harness connector T5n terminal | Reducing Agent Heater Control Module -J891- electrical harness connector T5h terminal |
|---|---|
| 2 | 2 |
| 1 | Ground |
Specified value: 1.5 Ω Max.
If the specification was Not obtained:
-- Check the wiring for a short circuit to ground, high resistance or an open circuit.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- If necessary, repair the wiring or connections and replace any open fuses.
-- Go to Final Procedures
If the specified value was obtained:
Replace the Reducing Agent Heater Control Module -J891-.
-- Go to Final Procedures