Dtc C1243: Internal Circuit Malfunction Of 4Wd Control Module; Dtc C1250: Coupling Air Temperature Sensor Circuit Open - Suzuki SX4 Service Manual
Hide thumbs
Also See for SX4:
- Owner's manual (47 pages) ,
- Owner's manual (16 pages) ,
- Owner's manual (18 pages)
Table of Contents
Advertisement
3B-19 Differential:
Step
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.
Ω
If resistance 1
or less?
DTC C1243: Internal Circuit Malfunction of 4WD Control Module
DTC Detecting Condition and Trouble Area
DTC detecting condition
Internal power supply malfunction of 4WD control module
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
Wiring Diagram
[A]: 4WD control module connector "G26" (viewed from harness side)
1. Coupling air temperature sensor
DTC Detecting Condition and Trouble Area
DTC detecting condition
Input signal from coupling air temperature sensor is higher than
specified value.
Action
BRN
G26-25
1
ORN
G26-24
[A]
12
11
10
9
8
7
26
25
24
23
22
21
20
Yes
Substitute a known-
good 4WD control
module and recheck.
4WD control module
2
5V
6
5
4
3
2
1
19
18
17
16
15
14
13
I7RW01320006-01
2. 4WD control module
• Coupling air temperature sensor
• Coupling air temperature sensor circuit
• 4WD control module
No
Repair ground circuit.
S7RW0A3204015
Trouble area
S7RW0A3204016
Trouble area
Advertisement
Chapters
Table of Contents
Troubleshooting
Need help?
Do you have a question about the SX4 and is the answer not in the manual?
Questions and answers
Adjust throttle motor
The idle speed on a Suzuki SX4 should be controlled by the Idle Air Control Valve (IACV) rather than adjusting the idle screw on the throttle body, as the screw is factory set. Before using compressed air in the idle-air-bypass passages, the IACV should be removed to prevent damage to its delicate mechanism. If there is an issue with idle speed, checking the IACV function and referring to the SX4 service manual is recommended.
This answer is automatically generated
I have an issue of crank but not starting When I scan it brought this codeU0100 Which means no communication thou crank sensor wire was cut off but it was fix back What could be wrong and what could be the solution,
My heater stopped working the blower **** is good, control unit ?
Possible issues with the heater in a Suzuki SX4 if the blower is working but the heater is not include:
1. Incorrect Temperature Output
- Temperature control cable broken or bent (non-A/C and manual A/C) → Check the temperature control cable.
- Temperature selector faulty (non-A/C and manual A/C) → Check the temperature selector.
- Incorrect installation of the temperature control cable (non-A/C and manual A/C) → Check and adjust the position as necessary.
- Temperature control door assembly broken → Repair the temperature control door assembly.
- Air ducts clogged → Repair air ducts.
- Heater core leaked or clogged → Replace the heater core.
- Heater hoses leaked or clogged → Replace heater hoses.
- Thermostat faulty → Check the thermostat.
- Temperature control actuator faulty (auto A/C) → Check the temperature control actuator.
- HVAC control module faulty (auto A/C) → Check the HVAC control module.
- Wiring or grounding faulty (auto A/C) → Repair as necessary.
2. Other Possible Causes
- Air flow control cable broken or bent → Check the air flow control cable.
Checking and addressing these components should help identify and resolve the heater issue.
This answer is automatically generated
دلایل بالا رفتن مصرف بنزین در مدل اتومات
increasing revs when changing gears
The Suzuki SX4 may have increasing revs when changing gears due to its drive-by-wire system and the difference in final drive ratios between the manual (4.41) and automatic (2.81) transmissions. This difference causes high cruising RPMs in the manual version and sluggishness in the automatic. Additionally, if the revs climb while going uphill, it may be due to the transmission downshifting or kicking out of overdrive. Other possible causes include low transmission fluid, abuse, or a faulty transmission design.
This answer is automatically generated