Suzuki 2006 SX4, Service Manual

Page: 146 / 1478

1A-102 Engine General Information and Diagnosis:
DTC Troubleshooting
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 Wire harness check
1) Turn ignition switch to OFF position.
2) Check for proper terminal connection to A/C condenser
cooling fan relay and ECM connectors.
3) If connections are OK, recheck DTC.
Is DTC P0481 detected again?
Go to Step 3. Intermittent trouble.
3 Circuit fuse check
1) Check “A/C” fuse (1) in fuse box No.2 with ignition switch
turned OFF.
Is “A/C” fuse in good condition?
Go to Step 4. Check for short in
circuits connected to
this fuse.
4 A/C condenser fan control circuit voltage check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from ECM.
3) Turn ignition switch ON position.
4) Check that A/C condenser cooling fan relay control
circuit voltage is battery voltage between ECM
connector and vehicle body ground.
Is it in good condition?
Substitute a known-
good ECM and recheck. Go to Step 5.
5 A/C condenser fan control circuit voltage check
1) Turn ignition switch to OFF position.
2) Remove A/C condenser cooling fan relay.
3) Turn ignition switch ON position.
4) Check that A/C condenser cooling fan relay power
supply voltage is battery voltage between A/C
condenser cooling fan relay connector and vehicle body
ground.
Is it in good condition?
Go to Step 6. Repair or replace power
supply circuit of A/C
condenser cooling fan
relay.
6 A/C condenser fan relay check
1) Check A/C condenser cooling fan relay for operation
referring to “Radiator Cooling Fan Relay Inspection in
Section 1F”.
Is it in good condition?
Repair or replace
control circuit of A/C
condenser cooling fan
relay. If circuit is OK,
substitute a known-
good ECM and recheck. Replace A/C condenser
cooling fan relay.
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I7RW01110068-01