Suzuki 2006 SX4, Service Manual

Page: 194 / 1478

1A-150 Engine General Information and Diagnosis:
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?
Go to Step 7. Go to Step 6.
6 ECM ground circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from ECM.
3) Measure resistance between each “C01-15”, “C01-30”,
“C01-29”, “C01-48” and “C01-58” terminals of ECM
connector and body ground.
Is resistance 1
Ω
or less?
Substitute a known-
good ECM and recheck. “BLK/ORN” or “BLK”
wire is open or high
resistance circuit.
7 Main relay circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Using service wire, ground “E01-60” terminal of ECM
connector and measure voltage between each “E01-1”
and “E01-16” terminals of ECM connector and body
ground.
Is voltage 10 – 14 V?
Go to Step 11. Go to Step 8.
8 Main relay circuit check
1) Remove main relay (1) from fuse box No.2.
2) Check for proper connection to main relay connector at
“BLK/YEL” and “BLK/RED” wire terminals.
3) If OK, measure resistance between each “E01-1” and
“E01-16” wire terminals of ECM connector and “BLK/
RED” wire terminal of main relay connector.
Is resistance 1
Ω
or less?
Go to Step 9. “BLK/RED” wire is open
circuit or high resistance
circuit.
9 Main relay circuit check
1) Remove main relay from fuse box No.2 with ignition
switch turned OFF.
2) Measure voltage between “BLK/YEL” wire terminal of
main relay connector and body ground.
Is voltage 10 – 14 V?
Go to Step 10. “BLK/YEL” wire is open
circuit.
Step Action Yes No
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