Suzuki 2006 SX4 Service Manual page 653

Troubleshooting
Step
1 Check TCM back-up power supply circuit
1) Disconnect connectors from TCM with ignition switch
turned OFF.
2) Check for proper connection to "C06-6" and "C06-24"
terminals of TCM connector.
3) If OK, measure voltage between "C06-24" terminal of
disconnected TCM connector and ground.
Is voltage 10 – 14 V?
2 Check TCM power supply circuit
1) Turn ignition switch to ON position.
2) Measure voltage between "C06-6" terminal of
disconnected TCM connector and ground.
Is voltage 10 – 14 V?
3 Check A/T relay
1) Turn ignition switch to OFF position.
2) Remove A/T relay.
3) Check A/T relay for operation referring to "A/T Relay
Inspection".
Is it in good condition?
4 Check TCM power supply circuit
1) Turn ignition switch to ON position.
2) Measure voltage between "YEL/BLU" and "LT GRN/
BLK" terminals of A/T relay connector and ground.
Is each voltage 10 – 14 V?
5 Check TCM ground circuit
1) Turn ignition switch to OFF position.
2) Check for proper connection to "C06-1" and "C06-23"
terminals of TCM connector.
3) Measure resistance as follows.
• Between "C06-1" terminal of TCM connector and
vehicle body ground.
• Between "C06-23" terminal of TCM connector and
vehicle body ground.
Is each resistance 1
Action
Ω
or less?
Automatic Transmission/Transaxle:
Yes
Go to Step 2.
Go to Step 5.
Go to Step 4.
Go to Step 5.
Substitute a known-
good TCM and recheck.
5A-65
No
"WHT/RED" circuit is
open or shorted to
ground.
Go to Step 3.
Replace A/T relay.
"YEL/BLU" and/or "LT
GRN/BLK" circuit are
open or shorted to
ground.
"BLK" circuit is open.