Suzuki 2006 SX4, Service Manual

Page: 459 / 1478

Differential: 3B-21
DTC C1252: Coupling Assembly Circuit Open
S6RW0C3204018
Wiring Diagram
DTC Detecting Condition and Trouble Area
3 Coupling assembly ground circuit check
1) Disconnect connector from 4WD control module with
ignition switch turned OFF.
2) Measure resistance between “ORN” terminal of coupling
air temperature sensor connector and “G26-24” terminal
of 4WD control module connector with ignition switch
turned OFF.
Is resistance above 1 M
Ω
?
Go to Step 4. “ORN” wire is shorted to
ground circuit.
4 Coupling air temperature sensor check
1) Check coupling air temperature sensor referring to
“Coupling Air Temperature Sensor Inspection”.
Is it in good condition?
Substitute a known-
good 4WD control
module and recheck. Replace coupling air
temperature sensor.
5 Coupling assembly circuit check
1) Disconnect connector from 4WD control module with
ignition switch turned OFF.
2) Check for proper connection to “G26-25” and “G26-24”
terminals of 4WD control module connector.
3) If connection is OK, measure resistance between “G26-
25” terminal of 4WD control module connector and
vehicle body ground.
Is resistance above 1 M
Ω
?
“BRN” wire is shorted to
ground circuit. Substitute a known-
good 4WD control
module and recheck.
Step Action Yes No
12V
G26-3
YEL
GRY
G26-2
L102-1
L102-4
1
2
1 2 3 4 5 6 7 8 9 10 11 12
13 14 15 16 17 18 19 20 21 22 23 24 25 26
[A]
2
1
[B]
I7RW01320007-01
[A]: 4WD control module connector “G26” (viewed from harness side) 1. Coupling assembly
[B]: Coupling assembly connector “L102” (viewed from harness side) 2. 4WD control module
DTC detecting condition Trouble area
2WD/4WD switch is changed of 4WD lock position, and then
vehicle is not changed for more than 5 seconds. • Coupling assembly
• Coupling assembly circuit
• 4WD control module