Page 435 - Foton Workshop Manual - Auman EST-M

Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts DI - 381

Failure phenomenon list IN

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. DI

Failure phenomenon Possible reason Failure elimination
EG
1. Exhaust brake fuse (burnt out) Replace the same spec fuse

2. Exhaust brake relay (damaged) Repair or replace the relay
TR
Repair or replace the exhaust brake
3. Exhaust brake switch (damaged)
switch
AX
Exhaust braking not working and
4. Exhaust brake circuit fault (open or short
Repair or replace the circuit
indicator off circuit)
FR
Repair or replace the exhaust brake
5. Exhaust braking solenoid valve (broken)
solenoid valve
ST
6. Exhaust braking signal harness (open or
Repair or replace the circuit
short)
BR
Repair or replace the exhaust brake
1. Exhaust braking solenoid valve (broken)
The exhaust brake doesn't work solenoid valve BW
but the indicator lamp is on. 2. Exhaust braking signal harness (open or
Repair or replace the circuit
short)
EL

DI-381