Dtc C1238: Center Differential Lock Switch Circuit Short - Suzuki Grand Vitara 2011 Manual

3C-43 Transfer: Motor-Shift Type (Transfer with Shift Actuator)
Step
3 Center differential lock switch check
1) Check center differential lock switch referring to
"Transfer Assembly Inspection: Motor-Shift Type
(Transfer with Shift Actuator)".
Is switch in good condition?
4 Wire harness check
1) Disconnect connector from 4WD control module
connector "E91" with ignition switch OFF.
2) Check for proper connection to "E91-14" terminal of
4WD control module connector.
3) If OK, measure resistance between "RED/GRN" terminal
of center differential lock switch connector and "E91-14"
terminal of 4WD control module connector.
Ω
Is it 1 or less?

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.
Action
1
12V
E91-13 PNK/WHT
E91-14 RED/GRN
[A]
11 10 9 8
12 7
26 25 24 23 22 21 20
Yes
Substitute a known-
good 4WD control
module and recheck.
Substitute a known-
good 4WD control
module and recheck.
2
IG
3
4
3
6 5 4 2 1
19 18 17 16 15 14 13
I5JB0A332018-01
3. 4L/N switch
4. Center differential lock switch
• Center differential lock switch
• Center differential lock switch circuit
• 4WD control module
No
Replace center
differential lock switch.
"RED/GRN" wire is
open or high resistance.
S6JB0A3314022
Trouble area