Start Diagnosis

-- Disconnect the T8 electrical harness connector located on the left side frame rail near the rear axle.

Checking resistance

-- Using a multimeter, measure the resistance of the Reduction Agent Reversing Valve -N473- terminals T8/1 to T8/3 (component side).

Specified value: 11.4 Ω (+/- 2.5 Ω)

If the specified value was Not obtained:

-- Replace the Reduction Agent Reversing Valve -N473-. Refer to the service information for removal and installation procedures.

If the specified value was obtained: