Page 301 - Foton Workshop Manual - Auman EST-M

Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts DI - 247

Failure phenomenon Phenomenon description IN

Ignition switch is in the "ON" gear, press the front fog lamp switch, one side of the front
One side of the front fog lamp is not DI
fog lamps is not on and the one on the other side is normal. Take the left front fog lamp
on
for example, and the right front fog lamp is detected with the same method.
Diagnosis procedure EG
1. Check the front fog lamp bulb
TR
a. Ignition switch:LOCK.

b. Check if the connectors of left and right front fog lamps are loose or fall off
AX
c. Dismount the left and right front fog lamp bulb

d. The positive and negative poles of bulb are connected to
FR
the positive and negative poles of battery respectively.

Check if the bulb can be on.
ST

BR

BW
Check if the result is ok?

Yes>go to Step 2. EL
NO>replace with the same spec bulb
2. Check the left front fog lamp power circuit

a. Ignition switch:LOCK.

b. Disconnect the connector B001 of left front fog lamp

c. Ignition switch: ON.

d. Take a multimeter to measure resistance between No. 2

terminal of B001 and grounding.
Standard voltage:

Multimeter connecting terminal Standard value

B001(2)-grounding Storage battery voltage

Is the test result ok?
Yes>go to Step 3.
NO>repair or replace the harness

DI-247