Suzuki 2006 SX4, Service Manual

Page: 143 / 1478

Engine General Information and Diagnosis: 1A-99
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 radiator cooling
fan relay (No.1, No.2 or No.3) and ECM connectors.
3) If connections are OK, recheck DTC.
Is DTC P0480 detected again?
Go to Step 3. Intermittent trouble.
3 Circuit fuse check
1) Check “RDTR” fuse (1) in fuse box No.2 with ignition
switch turned OFF.
Is “RDTR” fuse in good condition?
Go to Step 4. Check for short in
circuits connected to
this fuse.
4 Radiator cooling 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 radiator cooling fan relay (No.1, No.2 or
No.3) 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.
1
I7RW01110065-01