Suzuki SX4 Service Manual page 200

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1A-150 Engine General Information and Diagnosis:
DTC Troubleshooting
NOTE
Before this troubleshooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions for DTC Troubleshooting".
Step
1
Was "Engine and Emission Control System Check"
performed?
2
Electric throttle body assembly system check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch, check each voltage of "TP
Sensor 1 Volt" and "TP Sensor 2 Volt" displayed on scan
tool when accelerator pedal is idle position and fully
depressed.
Is displayed each TP sensor value as described voltage in
"Scan Tool Data"?
3
Throttle actuator circuit check
1) Disconnect connector from electric throttle body
assembly with ignition switch turned OFF.
2) Check for proper connection to electric throttle body
assembly at "BLU" and "YEL" wire terminals.
"BLU"
3) Disconnect connectors from ECM.
4) Check for proper connection to ECM at "C01-45" and
"C01-44" terminals.
5) Measure resistance at following connector terminals.
• Between "BLU" wire terminal of electric throttle body
assembly connector and "C01-45" terminal of ECM
connector
• Between "YEL" wire terminal of electric throttle body
assembly connector and "C01-44" terminal of ECM
connector
Is each resistance below 5
4
Electric throttle body assembly check
1) Check electric throttle body assembly referring to
"Electric Throttle Body Assembly and Its Circuit Check"
under "Electric Throttle Body Assembly On-Vehicle
Inspection in Section 1C".
Is check result satisfactory?
Action
"WHT"
"BLK"
"RED"
"YEL"
"GRN"
?
Yes
Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
Go to Step 4.
I5RW0C110016-01
Substitute a known-
good ECM and recheck.
No
Go to "Engine and
Emission Control
System Check".
Go to Step 3.
"BLU" wire and/or "YEL"
wire is open or high
resistance.
Replace electric throttle
body assembly.

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