Engine General Information and Diagnosis: 1A-184
DTC P1685: CAN Communication (Reception Error for ABS Control Module)
S5JB0A1104094
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.
DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions For DTC Troubleshooting: ”.
DTC detecting condition
Trouble area
Reception error of communication data for ABS hydraulic
unit / control module assembly is detected for longer than
specified time continuously.
(1 driving detection logic)
• ECM
• ABS hydraulic unit / control module assembly
• CAN communication line circuit
Step
Action
Yes
No
1
Was “Engine and Emission Control System Check”
performed?
Go to Step 2.
Go to “Engine and
Emission Control
System Check: ”.
2
DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check ECM, TCM (for A/T model), ABS hydraulic unit /
control module assembly, 4WD control module (for J20
engine), 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
in BCM, ABS hydraulic unit / control module assembly and
4WD control module (for J20 engine), and DTC No.31 / 33 in
keyless start control module (if equipped))?
Go to applicable DTC
diag. flow.
Go to Step 3.
3
Check CAN communication error for ECM
1) Check ECM for DTC.
Is there DTC P1674?
Go to “DTC P1674:
CAN Communication
(Bus Off Error): ”.
Go to Step 4.
4
ECM and ABS hydraulic unit / control module connector
check
1) Check for proper connection at each ECM and ABS
hydraulic unit / control module connector terminals with
ignition switch turned OFF.
2) If connections are OK, recheck ECM for DTC with
engine running.
Is there DTC P1685?
Go to Step 5.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection: in Section
00”.
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