Page 482 - Foton Workshop Manual - Tunland (AT)

04-336 DIAGNOSTICS - ENGINE CONTROL SYSTEM

(b) Check whether there is a leak inside the EGR valve.
(c) Check whether the EGR valve is locked in a closed position.

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

04 NO>Check the fault location.

3 . Check EGR valve circuit
(a) Ignition switch: OFF.
(b) Disconnect the battery negative cable.
(c) Disconnect the EGR valve connector E18.
(d) Connect the battery negative cable.
(e) Ignition switch: ON.

(f) Use a multimeter to measure the voltage
between the pin2, 5 of EGR valve connector
E18 and the ground respectively.

Standard voltage
Multimeter connection
Standard value
pin
E18（2）-ground Battery voltage

E18（5）-ground 4.75～5.25 V

Is the inspection result normal?

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

4 . Check EGR valve harness

(a) Ignition switch: OFF.
(b) Disconnect the battery negative cable.
(c) Disconnect the EGR valve connector E18.
(d) Disconnect connector E01 of ECM.

Page 482