1A-150 Engine General Information and Diagnosis:
DTC P1685: CAN Communication (Reception Error for ABS/ESP® Control Module)
S7RS0B1104066
Wiring Diagram
Refer to “DTC P1674: CAN Communication (Bus Off Error)”
DTC detecting Condition and Trouble Area
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.
6 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors form ECM, BCM and ABS/ESP®
control modules.
3) Check CAN communication circuit for open, short or
high resistance.
• Between ECM and ABS/ESP® control module
• Between ECM and BCM
Is each CAN communication circuit in good condition?
Go to Step 7. Repair circuit.
7 DTC check in ECM
1) Connect connectors to ECM, BCM and ABS/ESP®
control module with ignition switch turned.
2) Check ECM for DTC.
Does ECM communicate with control module other than
BCM (i.e. DTC P1676 and/or DTC P1685 are not detected)?
Substitute a known-
good BCM and recheck.
Substitute a known-
good ECM and recheck.
Step Action Yes No
DTC detecting condition Trouble area
Reception error of communication data for ABS/ESP®
control module is detected for longer than specified time
continuously.
(1 driving cycle detection logic)
•ECM
• ABS/ESP® control module
• CAN communication circuit
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