Suzuki GRAND VITARA JB416 Service Manual page 304

4F-41 Electronic Stability Program:
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
TCM message data is missing from CAN communication.
(for A/T model)
DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed?
2 DTC check for ESP®
1) Check DTC for ESP®.
Is DTC U1101 and DTC U1073 detected together?
3 DTC check for TCM
1) Check DTC for TCM.
Is DTC P1774 detected?
4 Check each control module connectors
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Check DTC for ESP®.
Is DTC U1101 detected?
5 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of ESP® control module and
TCM communicating by means of CAN.
Is each CAN communication circuit between ESP
module and TCM opened, shorted or high resistance?
6 CAN communication circuit check
1) Disconnect connectors of all control modules
communicating by means of CAN.
Is each CAN communication circuit between disconnected
control modules (other than ESP
opened, shorted or high resistance?
7 DTC check for ESP®
1) Connect connectors of disconnected control modules
communicating by means of CAN.
2) Disconnect each connector.
• ECM
• TCM
• BCM
• 4WD control module (if equipped)
• Keyless start control module (if equipped)
• Steering angle sensor
3) Check DTC for ESP®.
Is DTC U1101 detected?
Action
®
®
control module and TCM)
Trouble Area
• CAN communication circuit
• TCM
• ESP® control module
Yes
Go to Step 2.
Go to "DTC U1073:
Control Module
Communication Bus
Off: in Section 4E" for
troubleshooting.
Go to "DTC P1774:
CAN Communication
Bus Off: in Section 5A"
for troubleshooting.
Go to Step 5.
Repair or replace the
CAN communication
line.
control
Go to Step 7.
Check ESP® control
module power and
ground circuit. If circuits
are OK, substitute a
known-good ESP®
hydraulic unit / control
module assembly and
recheck.
No
Go to "Electronic
Stability Program
Check: ".
Go to Step 3.
Go to Step 4.
Check for intermittent
trouble referring to
"Intermittent and Poor
Connection Inspection:
in Section 00 in related
manual".
Go to Step 6.
Repair or replace the
CAN communication
line.
Check applicable
control module power
and ground circuit. If
circuit is OK, substitute
a known-good
applicable control
module and recheck.