Suzuki Liana RH418, Supplementary Service Manual

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1A-37 Engine General Information and Diagnosis:
Troubleshooting
Step Action Yes No
1 MIL power supply check
1) Turn ignition switch to ON position.
Do other warning lights come ON?
Go to Step 4. Go to Step 2.
2 METER fuse check
1) Turn ignition switch to OFF position.
2) Check for fuse blow at “METER” fuse.
Is “METER” fuse in good condition?
Go to Step 3. Replace “METER” fuse
and check for short.
3 MIL power supply check
1) Turn ignition switch to OFF position.
2) Remove combination meter referring to “Combination
Meter Removal and Installation in Section 9C in related
manual”.
3) Check for proper connection to combination meter
connector at “BLK/RED” wire terminal.
4) If OK, then turn ignition switch to ON position and
measure voltage between combination meter connector
at “BLK/RED” wire terminal and vehicle body ground.
Is voltage 10 – 14 V?
Replace combination
meter. Open wire in “BLK/RED”
and “GRN” wire circuit.
4 MIL power supply check
1) Disconnect ECM connector “G03”.
2) Check for proper connection to ECM connector at “G03-
7” terminal.
3) If OK, measure voltage between “G03-7” terminal of
ECM connector and vehicle body ground with ignition
switch turned ON.
Is voltage 10 – 14 V?
Go to Step 6. Go to Step 5.
5 MIL power supply check
1) Turn ignition switch to OFF position.
2) Remove combination meter referring to “Combination
Meter Removal and Installation in Section 9C in related
manual”.
3) Check for proper connection to combination meter
connector at “PPL/YEL” wire terminal.
4) If OK, measure resistance between “PPL/YEL” wire
terminal of combination meter connector and “G03-7”
terminal of ECM connector.
Is resistance 2
Ω
or less?
Replace combination
meter. Open or high resistance
in “PPL/YEL” wire
circuit.
6 ECM power and ground circuit check
1) Connect combination meter connectors.
2) Using service wire, ground terminal “G03-7” of
disconnected ECM connector.
Does MIL turn on at ignition switch turned ON?
Check ECM power and
ground circuit referring
to “MIL Does Not Light
at Ignition Switch ON
and Engine Does Not
Start Through It Is
Cranked Up”. If OK,
substitute a known-
good ECM and recheck. Replace combination
meter.