Suzuki SX4 Service Manual page 221

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Step
10 Internal circuit check in ABS / ESP® control module
1) Make sure that ignition switch is OFF position and
battery negative (–) cable is disconnected.
2) Connect ABS / ESP® control module connector and
disconnect ECM connector.
3) Measure resistance between the followings
• Between CAN High terminal on DLC and "E01-3"
terminal on ECM connector
• Between CAN Low terminal on DLC and "E01-18"
terminal on ECM connector
If each resistance 0 – 1
11
Substitute BCM and recheck
1) Substitute a known-good BCM and recheck.
Is it in good condition?
12 CAN communication check of TCM
1) Turn ignition switch to OFF position.
2) Connect TCM connectors.
3) Perform "Communication Bus Check" under "Bus
Check" using SUZUKI-SDT with ignition switch turned
ON.
Are all of BCM, ECM, ABS / ESP
combination meter and TCM normally displayed?
13 CAN communication check of keyless start control
module
1) Turn ignition switch to OFF position.
2) Connect keyless start control module connector.
3) Perform "Communication Bus Check" under "Bus
Check" using SUZUKI-SDT with ignition switch turned
ON.
Are all of BCM, ECM, ABS / ESP
combination meter, TCM and keyless start control module
normally displayed?
14 CAN communication check of yaw rate / G sensor
(ESP® model)
1) Turn ignition switch to OFF position.
2) Connect yaw rate / G sensor connector.
3) Perform "Communication Bus Check" under "Bus
Check" using SUZUKI-SDT with ignition switch turned
ON.
Are all of BCM, ECM, ABS / ESP
combination meter, TCM, keyless start control module and
yaw rate / G sensor normally displayed?
Action
?
®
control module,
®
control module,
®
control module,
Engine General Information and Diagnosis:
Yes
Substitute a known-
good ECM and recheck.
If NG, go to step 11.
End.
Go to Step 13.
Go to Step 14.
Go to Step 15.
1A-171
No
Substitute a known-
good ABS / ESP®
control module.
Substitute a known-
good ABS / ESP®
control module.
Check power and
ground circuits of TCM
referring to "TCM Power
and Ground Circuit
Check in Section 5A". If
OK, substitute a known-
good TCM.
Check power and
ground circuits of
keyless start control
module referring to
"Keyless Start Control
Module Power and
Ground Circuit Check in
Section 10E". If OK,
substitute a known-
good keyless start
control module.
Check power and
ground circuit of yaw
rate / G sensor referring
to "Step 3" to "Step 5"
under "DTC C1034 /
C1039: Yaw Rate / G
Sensor Power Supply
Failure / Internal Failure
in Section 4F". If OK,
substitute a known-
good yaw rate / G
sensor.

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