Suzuki SX4 Service Manual page 129
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Also See for SX4:
- Owner's manual (47 pages) ,
- Owner's manual (18 pages) ,
- Owner's manual (278 pages)
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Step
3
IAT sensor voltage check
1) Disconnect connector from MAF and IAT sensor with
ignition switch turned OFF.
2) Check for proper connection to MAF and IAT sensor at
"BLK/YEL" and "GRY/BLU" wire terminals.
3) If OK, then turn ON ignition switch, measure voltage
between "BLK/YEL" wire terminal of MAF and IAT
sensor connector (1) and vehicle body ground.
Is voltage about 4 – 6 V?
4
ECM voltage check
1) Turn OFF ignition switch.
2) Remove ECM from its bracket with ECM connectors
connected.
3) Check for proper connection of ECM connector at "C01-
25" terminal.
4) If OK, then turn ON ignition switch, measure voltage
between "C01-25" terminal of ECM connector and
vehicle body ground.
Is voltage about 4 – 6 V?
5
Wire circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Turn ON ignition switch.
3) Measure voltage between "BLK/YEL" wire terminal of
MAF and IAT sensor connector and vehicle body
ground.
Is voltage about 0 V?
6
Wire circuit check
1) Measure resistance between "C01-25" terminal of ECM
connector and "BLK/YEL" wire terminal of MAF and IAT
sensor connector with ignition switch turned OFF.
Is resistance below 5
7
Ground circuit check
1) Connect connectors to ECM.
2) Measure resistance between "GRY/BLU" wire terminal
of MAF and IAT sensor connector and vehicle body
ground with ignition switch turned OFF.
Is resistance below 5
Action
Ω
?
Ω
?
Engine General Information and Diagnosis:
Yes
Go to Step 7.
I4RS0B110020-01
"BLK/YEL" wire is open
circuit. If wire and
connection are OK, go
to Step 5.
Go to Step 6.
Go to Step 7.
Go to Step 9.
1A-79
No
Go to Step 4.
Go to Step 5.
"BLK/YEL" wire is
shorted to other circuit.
If wire is OK, substitute
a known-good ECM and
recheck.
"BLK/YEL" wire is high
resistance circuit.
Go to Step 8.
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Troubleshooting
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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,
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