Page 190 - Foton Workshop Manual - Auman EST-M

DI - 136 Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts

Failure phenomenon Possible reason Failure elimination
1. Washing liquor (not sufficient) Add washing liquor

2. Scrubber hose (broken) Replace the scrubber hose
3. Washing nuzzle (blocked) Repair or replace the scrubbing nozzle
Washing liquor failed to inject
Repair or replace the wiper combination
4. Wiper combination switch (broken)
switch

5. Washing motor (broken) Replace the scrubber motor
1. Wiper worm rusted or lubricant not Remove the rust on the wiper worm and
sufficient coat lubricant

2. Wiper arm deformed or worn Replace the wiper arm
3. Replaced wiper connecting rod Replace the wiper connecting rod
Wiper noisy when working
mechanism not matching mechanism

4. Wiper blade rubber aging or cracking Replace the wiper leaf
5. The wiper connecting rod mechanism Tighten the wiper connecting rod
is not fixed in place mechanism

1. Windscreen (with oil stain or car wax) Clean the windshield
2. Washing liquor (poor quality) Replace the washing liquor

Wiping effect poor (not wiping well or 3. Wiper leaf (wrong model)
shaking) 4. Wiper leaf (rubber aged or cracked) Replace the wiper leaf or wiper arm

5. Wiper arm (deformed or broken) assembly

6. Wiper arm (spring elasticity reducing)
Error code list

Use the list below to help you find the reasons of failures. The number represents the order of failure reason
possibility. Check each part according to the order and replace it when necessary.
J1939SPN code J1939FMI code Meaning of code Failed part

5 Wiper relay circuit open ● Wiper relay
516115 ● Wiper control circuit
6 Wiper relay circuit short
● BCM
● Wiper combination switch
● BCM
520273 7 Wiper reset signal failure
● Wiper motor and control
circuit
BCM power supply voltage ● Power supply circuit failure
3
too high ● Failure in BCM module
520274
BCM power supply voltage ● Power supply circuit failure
4
too low ● Failure in BCM module

DI-136