Dtc C1238: Center Differential Lock Switch Circuit Short - Suzuki Grand Vitara Service Manual

3C-40 Transfer: Motor-Shift Type (Transfer with Shift Actuator)

DTC C1238: Center Differential Lock Switch Circuit Short

Wiring Diagram
[A]: 4WD control module connector "E91" (viewed from harness side)
1. 4WD control module
2. TCM
DTC Detecting Condition and Trouble Area
DTC detecting condition
Though transfer shift actuator motor position switch is "4L-lock"
position, the OFF signal is not input from the center differential
lock switch.
DTC Confirmation Procedure
1) Clear DTC using scan tool.
2) Select transfer switch to "4L-lock" position and keep its position for 1 min.
3) Check DTC.
Troubleshooting
Step
1 Was "4WD control system check" performed?
2 Center differential lock switch circuit check
1) Disconnect center differential lock switch connector with
ignition switch OFF.
2) Check for proper connection to terminal of center
differential lock switch connector.
3) If connection is OK, measure voltage between "RED/
GRN" terminal of center differential lock switch
connector and vehicle body ground with ignition switch
ON.
Is it 10 – 14 V?
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1
12V
PNK/WHT
E91-13
E91-14 RED/GRN
[A]
11 10 9 8
12 7
26 25 23 22 21 20
24
Action
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2
IG
3
4
3
6 5 4 2 1
19 16 15 13
18 17 14
I5JB0A332018-01
3. 4L/N switch
4. Center differential lock switch
• Center differential lock switch
• Center differential lock switch circuit
• 4WD control module
Yes
Go to Step 2.
Go to Step 3.
S5JB0A3314049
Trouble area
No
Go to "4WD Control
System Check: Motor-
Shift Type (Transfer with
Shift Actuator)".
Go to Step 4.