Suzuki Grand Vitara 2011 Manual page 252

1A-183 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 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check ECM, TCM (for A/T model), ABS / ESP® control
module, 4WD control module (if equipped), keyless start
control module (if equipped) and BCM for DTC.
Is there any DTC(s) other than CAN communication DTC(s)
at each control module (other than DTC P1618, P1674,
P1676, P1678, P1685 in ECM, DTC P1774, P1777, P1778
in TCM (for A/T model), DTC U1073, U1100, U1101, U1121,
U1126, U1139, U1140, U1144 in BCM, ABS / ESP
module and 4WD control module (if equipped), and DTC
No.31 / 33 in keyless start control module (if equipped))?
3 Check CAN communication error for ECM
1) Check ECM for DTC.
Is there DTC P1674?
4 ECM, ABS / ESP® control module and TCM (for A/T
model) connector check
1) Check for proper connection at each ECM, ABS / ESP®
control module and TCM (for A/T model) connector
terminals with ignition switch turned OFF.
2) If connections are OK, recheck ECM for DTC with
engine running.
Is there DTC P1676?
5 ECM power and ground circuit check
1) Check ECM power and ground circuits referring to "ECM
Power and Ground Circuit Check: For Petrol Engine
Model".
Are they in good condition?
6 DTC check in TCM (for A/T model)
1) Check DTC P1774 in TCM (for A/T model).
Is it indicated?
Action
®
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
control
Go to "DTC P1674:
CAN Communication
(Bus Off Error): For
Petrol Engine Model".
Go to Step 5.
Go to Step 6.
Go to "DTC P1774:
CAN Communication
Bus Off in Section 5A".
No
Go to "Engine and
Emission Control
System Check: For
Petrol Engine Model".
Go to Step 3.
Go to Step 4.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
Repair ECM power and/
or ground circuits.
Go to Step 7.