Page 884 - Workshop Manual - Tunland (2017)

04-198 DIAGNOSTICS - ENGINE CONTROL SYSTEM

04 (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

(f) Use a multimeter to measure the voltage
between the pin1, 2 of DPF pressure sensor
connector Q02 and the ground respectively.
Standard resistance

Multimeter connection
Standard value
pin

Q02（1）- ground ＞ 10 MΩ

Q02（2）- ground ＞ 10 MΩ

Is the inspection result normal?
YES>To step 4.

No > Maintain or replace the harness.

4 . Replace DPF pressure sensor
(a) Replace DPF pressure sensor.
(b) Use a diagnostic apparatus to perform DTC verification procedures.
(c) Implement the steps to read sensor data stream.
(d) Check whether DTC exists.

Is the inspection result normal?
YES>Replace DPF pressure sensor.

NO >To step 5.

5 . Replace ECM
(a) Replace ECM.
(b) Use a diagnostic apparatus to perform DTC verification procedures.
(c) Implement the steps to read sensor data stream.