Page 456 - Foton Workshop Manual - Tunland (AT)

04-310 DIAGNOSTICS - ENGINE CONTROL SYSTEM

Is the inspection result normal?

YES>To step 2.
NO>Intermittent trouble exists.

2 . Check the mechanical system of the engine

04 (a) Check whether the injector works abnormally.
(b) Check whether the engine oil consumption is abnormal.

Is the inspection result normal?
YES>To step 3.

NO>Check the fault location.

3 . Check DPF temperature sensor circuit
(a) Ignition switch: OFF.
(b) Disconnect the battery negative cable.
(c) Disconnect DPF temperature sensor connector Q01.
(d) Connect the battery negative cable.
(e) Ignition switch: ON.

(f) Use a multimeter to measure the resistance
between the pin 4 of DPF temperature sensor
connector Q01 and the ground.

Standard voltage

Multimeter connection
Standard value
pin
Q01（4）-ground Battery voltage

Is the inspection result normal?
YES>To step 4.
No > Maintain or replace the harness.

4 . Check DPF temperature sensor harness
(a) Ignition switch: OFF.
(b) Disconnect the battery negative cable.
(c) Disconnect DPF temperature sensor connector Q01.
(d) Disconnect connector E01 of ECM.

Page 456