Suzuki Grand Vitara Service Manual page 181

Step
9 DTC check in ECM
1) Disconnect connector from keyless start control module
(if equipped) with ignition switch turned OFF.
2) Check ECM for DTC.
Is there DTC P1674?
10 DTC check in ECM
1) Disconnect connector from combination meter with
ignition switch turned OFF.
2) Check ECM for DTC.
Is there DTC P1674?
11 DTC check in ECM
1) Disconnect connector from 4WD control module (for J20
engine) with ignition switch turned OFF.
2) Check ECM for DTC.
Is there DTC P1674?
12 ABS hydraulic unit / control module check
1) Measure resistance at following connector terminals.
• Between "E03-8" terminal and "E03-6" terminal of
ABS hydraulic unit / control module connector.
• Between "E03-10" terminal and "E03-12" terminal of
ABS hydraulic unit / control module connector.
Is measured resistance below 1
13 CAN communication line circuit insulation check
1) Disconnect connector from ABS hydraulic unit / control
module assembly with ignition switch turned OFF.
2) Measure resistance between "E03-6" and "E03-12"
terminals of ABS hydraulic unit / control module
connector.
Is resistance infinity?
14 CAN communication line circuit insulation check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Measure resistance between "E23-4" and "E23-19"
terminals of ECM connector.
Is resistance infinity?
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Engine General Information and Diagnosis:
Yes
Go to Step 10.
Go to Step 11.
Go to Step 12.
Go to Step 13.
Go to Step 14.
Go to Step 15.
1A-174
No
"G44-19" or "G44-18"
circuit wire between
keyless start control
module and CAN circuit
junction connector is
open or high resistance.
If wires are OK,
substitute a known-
good keyless start
control module and
recheck.
"G28-10" or "G28-8"
circuit wire between
combination meter and
CAN circuit junction
connector is open or
high resistance. If wires
are OK, substitute a
known-good
combination meter or
keyless start control
module (if equipped)
and recheck.
"E91-22" or "E91-23"
circuit wire between
4WD control module
and CAN circuit junction
connector is open or
high resistance. If wires
are OK, substitute a
known-good 4WD
control module and
recheck.
Substitute a known-
good ABS hydraulic unit
/ control module and
recheck.
Repair insulation 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".