Dtc P1676: Can Communication (Reception Error For Tcm (For A/T Model)) - Suzuki GRAND VITARA Owner's Manual

Step
17 Check for short circuit of CAN communication line to
power circuit
1) Measure voltage at following connector terminals with
ignition switch turned ON.
• Between "E23-4" terminal of ECM connector and
vehicle body ground
• Between "E23-19" terminal of ECM connector and
vehicle body ground
• Between "E03-12" terminal of ABS hydraulic unit /
control module connector and vehicle body ground
• Between "E03-6" terminal of ABS hydraulic unit /
control module connector and vehicle body ground
• Between "G31-2" terminal of BCM connector and
vehicle body ground
• Between "G31-4" terminal of BCM connector and
vehicle body ground
Is each voltage 0 – 1 V?

DTC P1676: CAN Communication (Reception Error for TCM (for A/T model))

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 TCM 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.
Action
Engine General Information and Diagnosis:
Yes
Substitute a known-
good ABS hydraulic unit
/ control module and
recheck. If DTC is still
detected, substitute a
known-good ECM and
recheck.
Trouble area
• ECM
• TCM (for A/T model)
• CAN communication line circuit
1A-176
No
Repair short to power
supply of CAN
communication line
circuit referring to
"Precaution for CAN
Communication
System: in Section 00".
S5JB0A1104060