Page 478 - Foton Workshop Manual - Tunland (AT)

04-332 DIAGNOSTICS - ENGINE CONTROL SYSTEM

(c) Disconnect DPF differential pressure sensor Q02.
(d) Connect the battery negative cable.
(e) Ignition switch: ON.

(f) Use a multimeter to measure the voltage
between the pin 3 of DPF pressure sensor
04 connector Q02 and the ground.
Standard voltage

Multimeter connection
Standard value
pin
Q02（3）- ground 4.75～5.25 V

Is the inspection result normal?

YES>To step 4.
No > Maintain or replace the harness.

4 . Check DPF pressure sensor harness

(a) Ignition switch: OFF.
(b) Disconnect the battery negative cable.
(c) Disconnect DPF differential pressure sensor Q02.
(d) Disconnect connector E01 of ECM.

(e) Use a multimeter to measure the voltage
between the pin1, 2 of DPF pressure sensor
connector Q02 and the pin 41, 94of ECM
connector E01.
Standard resistance

Multimeter connection
Standard value
pin
Q02（1）- E01（41） ＜10 Ω

Q02（2）- E01（94） ＜10 Ω

Page 478