Page 314 - Foton Workshop Manual - Auman EST-M

DI - 260 Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts

Failure phenomenon Phenomenon description
Ignition switch is in the "ON" gear, after pressing the front fog lamp switch, whether
Two side rear fog lamps always on pressing the rear fog lamp switch or not, the rear fog lamps on both sides are normally
on.

Diagnosis procedure
1. Check the rear fog lamp switch

a. Ignition switch:LOCK.
b. Disconnect the connector B034 of rear fog lamp switch

c. Take a multimeter to check the continuity of the No. 18
and No. 16 terminals of the rear fog lamp switch connector
B034.
Multimeter
Condition Specified value
connecting terminal
Rear fog lamp switch
18-16 No breakdown
is not pressed
Rear fog lamp switch
18-16 Conduction
is pressed

Is the test result ok?
Yes>go to Step 2.

No> Replace rear fog lamp switch or short to ground.
2. Check the rear fog lamp switch

a. Ignition switch:LOCK.
b. Disconnect the switch B034 of rear fog lamp

c. Replace the rear fog lamp switch.
d. Disconnect left rear combination lamp connector H012 and right rear combination lamp connector H011,
respectively.
e. Ignition switch: ON.

f. Turn on the front fog lamp and the rear fog lamp switch
and take a multimeter voltage gear to measure the voltage
between No. 6 terminal of the left rear combination lamp
connector H012 and No. 6 terminal of the right rear
combination lamp connector H011 and grounding.
Standard voltage:

Multimeter connecting terminal Standard value

H012(6)- grounding Storage battery voltage
H011(6)- grounding Storage battery voltage

DI-260