Suzuki GRAND VITARA Owner's Manual page 933

DTC Detecting Condition and Trouble Area
DTC Detecting Condition
Transmission error that is inconsistent between transmission data
and transmission monitor (CAN bus monitor) data is detected more
than 7 times continuously.
(1 driving cycle detection logic)
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
NOTE
Upon completion of inspection and repair work, perform "DTC Confirmation Procedure: " and confirm
that the trouble has been corrected.
Step
1 Was "A/T System Check" performed?
2 Control module connector check
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Recheck DTC in TCM referring to "DTC Check: ".
Is there DTC P1774?
3 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?
4 DTC check
1) Turn ignition switch to OFF position.
2) Disconnect each connector.
ECM
ABS hydraulic unit / control module
BCM
4WD control module
Keyless start control module (if equipped)
Combination meter
3) Recheck DTC in TCM referring to "DTC Check: ".
Is there DTC P1774?
Action
Automatic Transmission/Transaxle:
Trouble Area
• ECM
• TCM
• Combination meter
• BCM
• ABS hydraulic unit / control module
• 4WD control module
• Keyless start control module (if equipped)
• CAN communication line circuit
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Check TCM power and
ground circuit. If circuit
is OK, substitute a
known-good TCM and
recheck.
5A-65
No
Go to "A/T System
Check: ".
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection: in Section
00".
Repair circuit.
Check applicable
control module power
and ground circuit. If
circuit is OK, substitute
a known-good
applicable control
module and recheck.