Suzuki Grand Vitara 2011 Manual page 136

1A-67 Engine General Information and Diagnosis: For Petrol Engine Model
DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions for DTC Troubleshooting: For Petrol Engine Model".
Step
1 Was "Engine and Emission Control System Check"
performed?
2 Oil control valve electrical circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection at "C37-60" and "C37-59"
terminals of ECM connector.
3) If OK, measure resistance between "C37-60" and "C37-
59" terminals of ECM connector.
Is resistance below 10
3 Oil control valve electrical circuit check
Was resistance more than 6.5
4 Oil control valve electrical circuit check for power short
1) Turn ON ignition switch.
2) Measure voltage between "C37-60" terminal of ECM
connector and engine ground.
Is voltage below 1 V?
5 Oil control valve electrical circuit check for ground
short
1) Disconnect connector from oil control valve with ignition
switch turned OFF.
2) Measure resistance between "C37-60" terminal of ECM
connector and engine ground.
Is resistance infinity?
6 Oil control valve electrical circuit check for ground
short
1) Measure resistance between "C37-59" terminal of ECM
connector and engine ground.
Is resistance infinity?
7 Oil control valve electrical circuit check for short
1) Disconnect connector from oil control valve with ignition
switch turned OFF.
2) Measure resistance between "C37-60" and "C37-59"
terminals of ECM connector.
Is resistance infinity?
Action
Ω
?
Ω
in Step 2?
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
Go to Step 6.
Go to Step 9.
Go to Step 9.
No
Go to "Engine and
Emission Control
System Check: For
Petrol Engine Model".
Go to Step 8.
Go to Step 7.
"RED", "BRN/WHT",
"YEL" or "BRN/YEL"
wire is shorted to power
supply circuit.
"BRN/WHT" wire is
shorted to ground
circuit.
"BRN/YEL" wire is
shorted to ground
circuit.
"BRN/WHT" wire is
shorted to "BRN/YEL"
wire.