Suzuki Grand Vitara JB627. Manual - part 201
4F-43 Electronic Stability Program:
6
DTC check for ESP
®
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Connect connectors to ESP
® control module and BCM.
4) Check DTC for ESP
®.
Is DTC U1140 detected?
Go to Step 7.
Go to Step 9.
7
DTC Check for ECM
1) Check DTC for ECM.
Is DTC U0140 detected?
Go to Step 8.
Check ESP
® control
module power and
ground circuit. If circuit
is OK, substitute a
known-good ESP
®
control module and
check DTC.
8
CAN communication circuit check
1) Turn ignition switch to OFF position
2) Disconnect connectors of ESP
® control module, BCM
and ECM communicating by means of CAN.
3) Measure resistance at following terminals.
• Between “WHT/BLU” and “WHT” wire terminals of
ESP
® control module connector
• Between “WHT/RED” and “RED” wire terminals of
ESP
® control module connector
Is resistance below 1
Ω
?
Check BCM power and
ground circuit. If circuit
is OK, substitute a
known-good BCM and
check DTC.
Substitute a known-
good ESP
® control
module and check DTC.
9
CAN communication circuit check
1) Turn ignition switch to OFF position.
Is each CAN communication circuit between disconnected
control modules (other than ESP
®
control module and BCM)
opened, shorted or high resistance?
Repair or replace the
CAN communication
line.
Go to Step 10.
10 DTC check for ESP
®
1) Connect connectors of disconnected control modules
communicating by means of CAN.
2) Disconnect each connector.
• ECM
• TCM (A/T model)
• BCM
• 4WD control module (if equipped)
• Keyless start control module (if equipped)
• Steering angle sensor
3) Check DTC for ESP
®.
Is DTC U1140 detected?
Check ESP
® control
module power and
ground circuit. If circuits
are OK, substitute a
known-good ESP
®
hydraulic unit / control
module assembly and
check DTC.
Check applicable
control module power
and ground circuit. If
circuit is OK, substitute
a known-good
applicable control
module and check DTC.
Step
Action
Yes
No