Suzuki SX4 Service Manual page 180

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1A-130 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
Wire circuit check
1) Disconnect radiator cooling fan relay (1) from individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Turn ON ignition switch, measure voltage between
engine ground to "BLK/RED" wire terminal.
Is voltage 10 – 14 V?
3
Wire circuit check
1) Connect radiator cooling fan relay to individual circuit
fuse box No.1 with ignition switch turned OFF.
2) Turn ON ignition switch, measure voltage between
vehicle body ground and "E01-46" terminal of ECM
connector when engine coolant temp. is below 100 °C
(212 °F).
Is voltage 10 – 14 V?
4
Wire circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Disconnect radiator cooling fan relay from individual
circuit fuse box No.1.
3) Measure resistance between "E01-46" terminal of ECM
connector and vehicle ground.
Is resistance infinity?
5
Wire circuit check
1) Turn ON ignition switch.
2) Measure voltage between "E01-46" terminal of ECM
connector and vehicle body ground.
Is voltage 0 V?
6
Radiator cooling fan relay check
1) Check radiator cooling fan relay referring to "Radiator
Cooling Fan Relay Inspection in Section 1F".
Is check result satisfactory?
Action
1
I5RW0A110036-02
Yes
Go to Step 2.
Go to Step 3.
Go to Step 7.
Go to Step 5.
Go to Step 7.
"LT GRN" wire is open
circuit.
No
Go to "Engine and
Emission Control
System Check".
Open wire in "BLK/RED"
wire is open circuit.
Go to Step 4.
"LT GRN" wire is
shorted to ground
circuit.
"LT GRN" wire is
shorted to other circuit.
Replace relay.

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