Engine General Information and Diagnosis: 1A-149
13
CAN communication line circuit ground short check
1) Measure resistance at following connector terminals.
• Between “E23-3” terminal of ECM connector and
vehicle body ground
• Between “E23-18” terminal of ECM connector and
vehicle body ground
• Between “C37-13” terminal of ECM connector and
vehicle body ground
• Between “C37-12” terminal of ECM connector and
vehicle body ground
• Between “G37-4” terminal of BCM connector and
vehicle body ground
• Between “G37-2” terminal of BCM connector and
vehicle body ground
Is each resistance infinity?
Go to Step 14.
Repair short to ground
of CAN communication
line circuit referring to
“Precaution for CAN
Communication
System: in Section 00”
14
Check for short circuit of CAN communication line to
power circuit
1) Measure voltage at following connector terminals with
ignition switch turned ON.
• Between “E23-3” terminal of ECM connector and
vehicle body ground
• Between “E23-18” terminal of ECM connector and
vehicle body ground
• Between “C37-13” terminal of ECM connector and
vehicle body ground
• Between “C37-12” terminal of ECM connector and
vehicle body ground
• Between “G37-4” terminal of BCM connector and
vehicle body ground
• Between “G37-2” terminal of BCM connector and
vehicle body ground
Is each voltage 0 – 1 V?
Substitute a known-
good BCM (included in
junction block
assembly) and recheck.
If DTC is still detected,
substitute a known-
good ECM and recheck.
Repair short to power
supply of CAN
communication line
circuit referring to
“Precaution for CAN
Communication
System: in Section 00”
Step
Action
Yes
No
Содержание SWIFT RS415 2017
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