Suzuki 2006 SX4, Service Manual

Page: 456 / 1478

3B-18 Differential:
DTC C1243: Internal Circuit Malfunction of 4WD Control Module
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DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC using scan tool.
2) Start engine and run it for 10 seconds. or more.
3) Stop vehicle and check DTC.
Troubleshooting
Substitute a known-good 4WD control module and recheck.
DTC C1250: Coupling Air Temperature Sensor Circuit Open
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Wiring Diagram
DTC Detecting Condition and Trouble Area
3 Ground circuit check
1) Turn ignition switch to OFF position.
2) Check for proper connection to “G26-10” terminal of
4WD control module connector.
3) If OK, measure resistance between “G26-10” terminal of
4WD control module connector and vehicle body
ground.
If resistance 1
Ω
or less?
Substitute a known-
good 4WD control
module and recheck. Repair ground circuit.
Step Action Yes No
DTC detecting condition Trouble area
Internal power supply malfunction of 4WD control module • 4WD control module
[A]: 4WD control module connector “G26” (viewed from harness side) 2. 4WD control module
1. Coupling air temperature sensor
DTC detecting condition Trouble area
Input signal from coupling air temperature sensor is higher than
specified value. • Coupling air temperature sensor
• Coupling air temperature sensor circuit
• 4WD control module
2
G26-25
G26-24
ORN
BRN
5V
1
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]
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