Suzuki SX4 Service Manual page 214

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1A-164 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
APP sensor and its circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch.
3) Check each voltage of "APP Sensor 1 Volt" and "APP
Sensor 2 Volt" displayed on scan tool when accelerator
pedal is idle position and fully depressed.
Is each APP sensor voltage within specified value in the
table "Scan Tool Data"?
3
ECM voltage check
1) Disconnect connector from APP sensor assembly with
ignition switch turned OFF.
2) Check for proper connection to APP sensor assembly at
"BRN", "GRN", "BLU", "RED", "YEL" and "WHT" wire
terminals.
"RED"
3) If OK, measure voltage between "BRN" wire terminal of
APP sensor assembly connector and vehicle body
ground, between "RED" wire terminal of APP sensor
assembly connector and vehicle body ground with
ignition switch turned ON.
Is each 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 "E01-
35" and "E01-34" terminals
3) If OK, measure resistance between "E01-35" terminal of
ECM connector and engine ground, between "E01-34"
terminal of ECM connector and engine ground.
Is each resistance infinity?
5
Wire harness check
1) Measure voltage between "E01-35" terminal of ECM
connector and engine ground, between "E01-34"
terminal of ECM connector and engine ground with
ignition switch turned ON.
Is each voltage 0 V?
Action
"BRN"
"YEL"
"BLU"
"WHT"
"GRN"
Yes
Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
Go to Step 6.
I4RS0B110048-01
Go to Step 5.
Substitute a known-
good ECM and recheck.
No
Go to "Engine and
Emission Control
System Check".
Go to Step 3.
Go to Step 4.
"BRN" wire or "RED"
wire is shorted to other
circuit.
"BRN" wire or "RED"
wire is shorted to other
circuit.

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