Suzuki GRAND VITARA JB416, Service Manual

Page: 432 / 474

10B-12 Body Electrical Control System:
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC and pending DTC.
DTC Troubleshooting
DTC detecting condition Trouble area
Transmission error that is inconsistent between transmission data
and transmission monitor (CAN bus monitor) data is detected more
than 7 times continuously.
(1 driving detection logic) • CAN circuit
• Combination meter
• BCM
• 4WD control module (if equipped)
• ABS or ESP
®
control module
• TCM (A/T model)
• Keyless start control module (if equipped)
• ECM
• Steering angle sensor (if equipped)
Step Action Yes No
1 Control module connector check
1) Check connection of connectors of all control modules
communicating by means of CAN and reconnect
securely.
2) Recheck DTC and reconnect securely.
Is DTC U1073 detected?
Go to Step 2. Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection: in Section
00 in related manual”.
2 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check CAN communication circuit between control
modules for open, short and high resistance.
Is each CAN communication circuit in good condition?
Go to Step 3. Repair circuit.