SSANGYONG 2004 Rexton 2.7XDi Workshop Manual page 1048

FLOW CHART FOR TROUBLE DIAGNOSIS
Note
1. Use a scanner to check.
2. Refer to circuit diagram for ECPS ECU.
Any problem with ECU
power supply fuse?
Yes
Check ignition
switch with ECU
disconnected and
ignition switch
"ON".
Is the voltage between
ground terminal and
ECU harness terminal
#4 measured by 12 V?
Yes
Disconnect battery
(-) terminal and
check.
Check the continuity
between #1 and #2 con-
nector in ECU harness.
Yes
Is the resistance between
terminal #1 and #2 mea-
sured by 5.7 ~ 7.7 Ω (at
20°C) during integrity
check?
Yes
ECPS (Electronic Control Power Steering)
REXTON SM - 2004.4
No
Open wiring (damaged harness)
Damaged or disconnected har-
No
ness between fuse and ECU
#5 terminal
Disconnect the solenoid
No
valve connector in engine
compartment and check.
Check the continuity between 2
connectors in gear box solenoid.
Yes
Damaged or disconnected wir-
ing between ECU and ECPS
solenoid valve connector
No
Poor contact in ECPS sole-
noid valve connector
Poor contact in ECPS solenoid
valve connector or defective ECU
Repair harness/replace fuse
Reconnect or repair harness.
If normal, replace ECU.
Repair harness
No
Damaged or disconnected wir-
ing in ECPS solenoid valve coil
Replace solenoid valve or re-
pair connection area.
Repair solenoid valve connector.
Check solenoid valve connec-
tor or replace ECU
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
6B-11