Suzuki GRAND VITARA Owner's Manual page 181

DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions For DTC Troubleshooting: ".
Step
1 Was "Engine and Emission Control System Check"
performed?
2 CKP sensor and connector for proper installation check
Is CKP sensor installed properly and connector connected
securely?
3 Wire circuit check
1) Disconnect connector from CKP sensor with ignition
switch turned OFF.
2) Check for proper connection to CKP sensor at "PNK"
and "BLU" wire terminals.
3) If OK, measure voltage between engine ground and
each "PNK" and "BLU" wire terminals of CKP sensor
connector with ignition switch turned ON.
Is each voltage 0 V?
4 Wire circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection to ECM at "C37-36" and
"C37-51" terminals.
3) If OK, measure resistance between engine ground and
each "C37-36" and "C37-51" terminals of ECM
connector.
Is each resistance infinity?
5 Wire circuit check
1) Measure resistance at following connector terminals.
• Between "C37-51" terminal of ECM connector and
"BLU" wire terminal of CKP sensor connector
• Between "C37-36" terminal of ECM connector and
"PNK" wire terminal of CKP sensor connector
Is each resistance below 5
6 Engine start signal check
1) Check starting motor circuit for opening and short
referring to Step 2 of "DTC P0616: Starter Relay Circuit
Low: " and Step 3 and 4 of "DTC P0617: Starter Relay
Circuit High: ".
Is check result satisfactory?
7 CKP sensor check
1) Check CKP sensor and sensor plate tooth referring to
"Camshaft Position (CMP) Sensor Inspection: in Section
1C".
Is check result satisfactory?
Action
Ω
?
Engine General Information and Diagnosis:
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
Go to Step 6.
Go to Step 7.
Substitute a known-
good ECM and recheck.
1A-126
No
Go to "Engine and
Emission Control
System Check: ".
Correct.
"PNK" wire and/or "BLU"
wire is shorted to other
circuit.
"PNK" wire and/or "BLU"
wire is shorted to
ground circuit.
"PNK" wire and/or "BLU"
wire is open or high
resistance.
Repair or replace.
Replace CKP sensor
and/or sensor plate.