Dtc P1685: Can Communication - Suzuki GRAND VITARA JB416 Service Manual

1A-42 Engine General Information and Diagnosis:
Step
17 Combination meter operation check
1) Check combination meter operation for seat belt warning
lamp by fastening and unfastening driver side seat belt
with ignition switch turned ON.
Is it check result satisfactory?
DTC P1685: CAN Communication (Reception Error for ABS or ESP® Control Module)
Wiring Diagram
Refer to "DTC P1674: CAN Communication (Bus Off Error): ".
DTC Detecting Condition and Trouble Area
DTC detecting condition
Reception error of communication data for ABS or ESP®
control module is detected for longer than specified time
continuously.
(1 driving 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.
DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions For DTC Troubleshooting: in related manual".
Step
1 Was "Engine and Emission Control System Check"
performed?
2 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check ECM, TCM (for A/T model), ABS / ESP® control
module, 4WD control module (if equipped), keyless start
control module (if equipped) and BCM for DTC.
Is there any DTC(s) other than CAN communication DTC(s)
at each control module (other than DTC P1618, P1674,
P1676, P1678, P1685 in ECM, DTC P1774, P1777, P1778
in TCM (for A/T model), DTC U1073, U1100, U1101, U1121,
U1126, U1139, U1140, U1144 in BCM, ABS / ESP
module and 4WD control module (if equipped), and DTC
No.31 / 33 in keyless start control module (if equipped))?
3 Check CAN communication error for ECM
1) Check ECM for DTC.
Is there DTC P1674?
Action
Action
®
Yes
Substitute a known-
good ECM and recheck.
Trouble area
• ECM
• ABS or ESP® control module
• CAN communication line circuit
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
control
Go to "DTC P1674:
CAN Communication
(Bus Off Error): ".
No
Check BCM power and
ground circuits, If
circuits are OK,
substitute a known-
good BCM and recheck.
S5JB0E1104067
No
Go to "Engine and
Emission Control
System Check: in
related manual".
Go to Step 3.
Go to Step 4.