Suzuki 2006 SX4, Service Manual

Page: 133 / 1478

Engine General Information and Diagnosis: 1A-89
DTC Confirmation Procedure
NOTE
Check to make sure that the following conditions are satisfied when using this “DTC Confirmation
Procedure”.
• The following DTCs are not detected: DTCs related to starter relay
1) With ignition switch OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Crank engine for 3 – 5 sec.
4) Check DTC.
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 CKP sensor and connector for proper installation check
Is CKP sensor installed properly and connector connected
securely?
Go to Step 3. Correct.
3 Wire harness check
1) Turn ignition switch OFF position.
2) Disconnect connector from ECM.
3) Check that CKP sensor circuit is as follows.
• Wiring harness resistance of CKP sensor signal circuit
is less than 3
Ω
.
• Insulation resistance of each CKP sensor signal and
ground circuit between CKP sensor connector and
vehicle body ground is infinity.
• Insulation resistance of wire harness is infinity
between CKP sensor signal terminal and each other
terminal at CKP sensor connector.
• Circuit voltage of each CKP sensor signal circuit and
ground circuit is 0 – 1 V with ignition switch turned
ON.
Are they in good condition?
Go to Step 4. Repair or replace
defective wire harness.
4 Engine start signal check
1) Check starting motor circuit referring to Step 3 of “DTC
P0616 / P0617: Starter Relay Circuit Low / High”.
Is check result satisfactory?
Go to Step 5. Repair or replace.
5 CKP sensor check
1) Check CKP sensor and sensor rotor referring to
“Crankshaft Position (CKP) Sensor Inspection in Section
1C”.
Are they in good condition?
Substitute a known-
good ECM and recheck. Replace CKP sensor
and/or sensor rotor.