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Reducing Agent Temperature Sensor -G685-, CHECKING

Function

The Reducing Agent Temperature Sensor -G685- provides the temperature information on the reducing agent to the Reducing Agent Metering System Control Module -J880- which controls the heating devices in either melting or warming mode.

Special tools and workshop equipment required 

Test Requirements 

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:
  • GO TO: Step
-- NO:
  • Gather more Information from customer about the complaint
  • DISCONNECT: Reducing Agent Metering System Control Module -J880- electrical connector
  • IGNITION: ON
  • CHECK: Reducing Agent Metering System Control Module -J880- wiring connector terminals T30 / 11, 18 to T30 / 30 for voltage
  • SPECIFIED VALUE: Battery voltage
  • CHECK: Reducing Agent Metering System Control Module -J880- wiring connector terminals T30 / 11, 18, to T30 / 10 for voltage
  • SPECIFIED VALUE: 5 volts
  • IGNITION: OFF
-- Was value obtained?
-- YES:
  • GO TO: Step
-- NO:
  • CHECK: wiring for open, high resistance, short or electrical connector for damage, corrosion, loose or broken terminals
  • REPAIR: faulty wiring or connector
  • GO TO: Step
  • REMOVE: Engine Control Module -J623-. Refer to appropriate service manual.
  • CHECK: Reducing Agent Temperature Sensor -G685- electrical connector terminals 1 to the Engine Control Module -J623- electrical connector terminals T91 / 12.
  • CHECK: Reducing Agent Temperature Sensor -G685- electrical connector terminals 2 to the Engine Control Module -J623- electrical connector terminals T91 / 42.
  • SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω)
-- Was value obtained?
-- YES:
  • REPLACE: Reducing Agent Temperature Sensor -G685-. Refer to appropriate repair manual.
  • GO TO: Step
-- NO:
  • CHECK: wiring for open, high resistance, short or electrical connector for damage, corrosion, loose or broken terminals
  • REPAIR: faulty wiring or connector
  • GO TO: Step
  • Final Procedure 
  • Perform a road test to verify repair.
  • Do any DTC's return:
-- YES:
  • FAULT DOES RETURN:
  • Perform the diagnostic procedure for that DTC.
  • no malfunction is detected in the wiring.
  • REPLACE: Engine Control Module -J623-. Refer to proper repair manual for removal and replace procedures.
-- NO:
  • Repair is complete, Generate readiness code. Refer to READINESS CODE .
  • Return vehicle to Customer