Suzuki SX4 Service Manual page 245

Troubleshooting
NOTE
• Before performed trouble shooting, be sure to read the "Precautions of ECM Circuit Inspection".
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to "Inspection of ECM and Its Circuits".
Step
1 Circuit fuse check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection to ECM connector at "E01-
2", "E01-29", "E01-60", "E01-1", "E01-16", "E01-31",
"C01-58", "C01-15" and "C01-30" terminals.
3) If OK, check "DOME" fuse and "IG COIL" fuse for
blowing.
Are "DOME" fuse and "IG COIL" fuse in good condition?
2 Power supply circuit check
1) Measure voltage between "E01-2" terminal of ECM
connector and body ground.
Is voltage 10 – 14 V?
3 Ignition signal check
1) Turn ignition switch to ON position.
2) Measure voltage between "E01-29" terminal of ECM
connector and body ground.
Is voltage 10 – 14 V?
4 Main relay circuit check
1) Turn ignition switch to OFF position.
2) Check "FI" fuse (1) (15 A) in individual circuit fuse box
No.1 for blowing.
3) If OK, measure voltage between "E01-60" terminal of
ECM connector and body ground.
Is voltage 10 – 14 V?
5 Main relay circuit check
1) Connect connectors to ECM with ignition switch turned
OFF.
2) Turn ignition switch to ON position.
3) Measure voltage between "E01-60" terminal of ECM
connector and body ground.
Is voltage 0 – 1 V?
Action
1
Engine General Information and Diagnosis:
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
I5RW0A110058-02
Go to Step 7.
1A-195
No
Replace fuse (s) and
check for short in
circuits connected to
fuse(s).
"WHT/RED" or "WHT"
wire is open circuit.
"BLK/WHT" or "GRN"
wire is open circuit.
Go to Step 9.
Go to Step 6.