Test Procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
The reducing agent AdBlue® can irritate skin, eyes and possibly the respiratory system. If the fluid comes into contact with skin, rinse the affected area with plenty of water. Consult a physician if necessary.
The Reducing Agent Tank Heater is located on the top of the Reducing Agent Tank Assembly below the Reducing Agent pump. This component is available separately. Refer to Exhaust System component overviews in the Repair Information for component locations.
The Reducing Agent Tank Heater (Heating Circuit 1) -Z102- / Reducing Agent Temperature Sensor -G685-, are a combined unit and are serviced as an assembly.
Start diagnosis
-- Remove the Reducing Agent Tank Assembly. The assembly is located above the rear muffler, mounted under the spare tire well, protected by a metal shield. Refer to the Repair Information for location and removal instructions.
-- Disconnect the electrical harness connector T4ab at the Reducing Agent Tank Heater (Heating Circuit 1) -Z102- / Reducing Agent Temperature Sensor -G685- -8-
-- Switch the ignition ON.
-- Using a multimeter, Measure the voltage of the Reducing Agent Tank Heater (Heating Circuit 1) -Z102- / Reducing Agent Temperature Sensor -G685- electrical harness connector terminals 3 and 4 for voltage.
Specified value: About 5.0 V
-- Switch the ignition Off.
If the specified value was obtained:
-- Replace the Reducing Agent Tank Heater (Heating Circuit 1) -Z102- / Reducing Agent Temperature Sensor -G685-. Refer to the service information for removal and installation procedures.
If the specified value was Not obtained: