Suzuki 2006 SX4, Service Manual

Page: 173 / 1478

Engine General Information and Diagnosis: 1A-129
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 control module, combination
meter and TCM normally displayed?
Go to Step 13. 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.
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 control module, combination
meter, TCM and keyless start control module normally
displayed?
Go to Step 14. 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.
14 CAN communication check of 4WD control module
1) Turn ignition switch to OFF position.
2) Connect combination meter connector and 4WD control
module.
3) Perform “Communication Bus Check” under “Bus
Check” on SUZUKI-SDT with ignition switch turned ON.
Are all of BCM, ECM, ABS control module, combination
meter, TCM, keyless start control module, combination
meter and 4WD control module normally displayed?
Recheck DTC. Check power and
ground circuits of 4WD
control module referring
to “Step 2” and “Step 3”
under “DTC C1240:
4WD Control Module
Power Supply Circuit
Malfunction in Section
3B”. If OK, substitute a
known-good 4WD
control module.
Step Action Yes No