Suzuki SX4 Service Manual page 140

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1A-90 Engine General Information and Diagnosis:
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Keep the accelerator pedal at idle position for 2 seconds.
4) Keep the accelerator pedal at fully depressed position for 2 seconds.
5) Repeat Step 3) and 4) for 3 times.
6) Check DTC.
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
Throttle position sensor and its circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch, check "TP Sensor 1 Volt"
displayed on scan tool when accelerator pedal is idle
position and fully depressed.
Is displayed TP sensor value as described voltage in "Scan
Tool Data"?
3
ECM voltage 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 "RED", "GRN" and "BLK" wire terminals.
"BLU"
3) If OK, measure voltage between "RED" wire terminal of
electric throttle body assembly connector and engine
ground with ignition switch turned ON.
Is voltage 4 – 6 V?
4
Wire harness check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection of ECM connector at "C01-
43" terminal.
3) Measure voltage between "C01-43" terminal of ECM
connector and engine ground with ignition switch turned
ON.
Is voltage 0 V?
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 5.
I5RW0C110016-01
Substitute a known-
good ECM and recheck.
No
Go to "Engine and
Emission Control
System Check".
Go to Step 3.
Go to Step 4.
"RED" wire is shorted to
power circuit.

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