Suzuki GRAND VITARA JB416, Service Manual

Page: 344 / 474

5A-25 Automatic Transmission/Transaxle:
DTC Troubleshooting
NOTE
Upon completion of inspection and repair work, perform “DTC Confirmation Procedure: ” and confirm
that the trouble has been corrected.
Step Action Yes No
1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check: in related
manual”.
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: in
related manual”.
Is there DTC P1777?
Go to Step 3. Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection: in Section
00 in related manual”.
3 DTC check in ABS/ESP
®
control module
1) Check DTC in ABS/ESP
®
control module.
Is there DTC U1100?
Go to Step 4. Go to Step 5.
4 DTC check
1) Check DTC in ECM referring to “DTC Check: in Section
1A in related manual”.
Is there DTC P1674?
Go to “DTC P1674:
CAN Communication
(Bus Off Error): in
Section 1A”. Check ECM power and
ground circuit. If circuit
is OK, CAN
communication circuit
between ECM and ABS/
ESP
®
control module is
open circuit.
5 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?
Check TCM power and
ground circuit. If circuit
is OK, substitute a
known-good TCM and
recheck. Repair circuit.