Test Procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
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 at the Reduction Agent Pressure Sensor -G686- -4-
-- Switch the ignition ON.
-- Using a Multimeter, Check the Reduction Agent Pressure Sensor -G686- electrical harness connector terminals 1 to 3 for voltage.
Specified value: about 5.0 V
-- Switch the ignition Off.
Continue test according to the following table:
| Value | Cause | Test |
|---|---|---|
| If the specified value was not obtained: | Open or shorted circuit | Checking Wiring |
| If the specified value was obtained: | Check reference signal circuit | Checking Activation |