Dtc C1253: Coupling Assembly Circuit Short - Suzuki SX4 Service Manual

DTC C1253: Coupling Assembly Circuit Short

Wiring Diagram
[A]
[A]: 4WD control module connector "G26" (viewed from harness side)
[B]: Coupling assembly connector "L102" (viewed from harness side)
DTC Detecting Condition and Trouble Area
DTC detecting condition
2WD/4WD switch is changed of 4WD lock position, and then
vehicle is not changed for more than 5 seconds.
DTC Confirmation Procedure
1) Clear DTC using scan tool.
2) Start engine and select 2WD/4WD switch to "LOCK" position.
3) Keep engine running at 2000 rpm for 10 seconds. or more.
4) Stop engine and check DTC.
Troubleshooting
Step
1 Was "4WD control system check" performed?
2 Coupling assembly circuit check
1) Disconnect coupling assembly connector "L102" with
ignition switch turned OFF.
2) Check for proper connection to "L102-1" and "L102-4"
terminals of coupling assembly connector.
3) If connection is OK, measure voltage between "L102-1"
terminal of coupling assembly connector and vehicle
body ground.
Is it 10 – 14 V?
3 Coupling assembly ground circuit check
1) Measure resistance between "L102-4" terminal of
coupling assembly connector and vehicle body ground
with ignition switch turned OFF.
Is resistance below 5
1
L102-1
L102-4
11 10 9 8
12 7 6
26 25 24 23 22 21 20
Action
Ω
?
2
12V
GRY G26-3
YEL
G26-2
3
5 4 2 1
19 18 17 16 15 14 13
• Coupling assembly
• Coupling assembly circuit
• 4WD control module
Go to Step 2.
Go to Step 3.
Go to Step 4.
Differential:
[B]
2 1
1. Coupling assembly
2. 4WD control module
Trouble area
Yes
Go to "4WD Control
System Check".
Go to Step 6.
Go to Step 5.
3B-24
S7RW0A3204019
I7RW01320007-01
No