Suzuki GRAND VITARA Owner's Manual page 234

1A-179 Engine General Information and Diagnosis:
Step
13 CAN communication line circuit continuity check
1) Disconnect connectors from all control modules
communicating by CAN with ignition switch turned OFF.
2) Measure resistance at following connector terminals.
• Between "E23-4" terminal of ECM connector and
"E03-10" terminal of ABS hydraulic unit / control
module connector
• Between "E23-19" terminal of ECM connector and
"E03-8" terminal of ABS hydraulic unit / control
module connector
• Between "E03-12" terminal of ABS hydraulic unit /
control module connector and "E92-17" terminal of
TCM connector
• Between "E03-6" terminal of ABS hydraulic unit /
control module connector and "E92-7" terminal of
TCM connector
Is each resistance below 1
14 CAN communication line circuit insulation check
1) Measure resistance at following connector terminals.
• Between "E23-4" and "E23-19" terminal of ECM
connector
• Between "E92-17" and "E92-7" terminal of TCM
connector
Is reach resistance infinity?
15 CAN communication line circuit ground short check
1) Measure resistance at following connector terminals.
• Between "E23-4" terminal of ECM connector and
vehicle body ground
• Between "E23-19" terminal of ECM connector and
vehicle body ground
• Between "E92-7" terminal of TCM connector and
vehicle body ground
• Between "E92-17" terminal of TCM connector and
vehicle body ground
Is each resistance infinity?
16 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 "E92-7" terminal of TCM connector and
vehicle body ground
• Between "E92-17" terminal of TCM connector and
vehicle body ground
Is each voltage 0 – 1 V?
Action
Ω
?
Yes
Go to Step 14.
Go to Step 15.
Go to Step 16.
Go to Step 17.
No
Repair open or high
resistance of CAN
communication line
circuit referring to
"Precaution for CAN
Communication
System: in Section 00".
Repair insulation of
CAN communication
line circuit referring to
"Precaution for CAN
Communication
System: in Section 00".
Repair short to ground
of CAN communication
line circuit referring to
"Precaution for CAN
Communication
System: in Section 00".
Repair short to power
supply of CAN
communication line
circuit referring to
"Precaution for CAN
Communication
System: in Section 00".