Suzuki Ignis Service Manual page 1453

7B-48 AUTOMATIC TRANSAXLE
Diagnostic Flow Table A-5: TCM Power and Ground Circuit Check
Wiring Diagram
1. TCM
2. A/T relay
Troubleshooting
Step
1 Check TCM Back-up Power Circuit
1) Disconnect TCM connector with ignition
switch OFF.
2) Check for proper connection to TCM at
"C39-24" terminal.
3) If OK, check voltage at terminal "C39-24" of
disconnected TCM connector.
Is it 10 – 14 V?
2 Check TCM Power Circuit.
1) Disconnect TCM connector with ignition
switch OFF.
2) Check for proper connection to TCM at
"C39-6" terminal.
3) If OK, turn ignition switch ON and check
voltage at terminal "C39-6" of disconnected
TCM connector.
Is it 10 – 14 V?
3 Check A/T Relay Operation.
Check A/T relay operation referring to "A/T
Relay" in this section.
Is check result satisfactory?
1
C39-24
C39-6
C39-1
C39-23
[A]
C39
6
24 23
3. Ignition switch
[A]: Terminal arrangement of TCM connector (viewed from harness side)
Action
WHT/RED
2
+BB
YEL/BLK YEL/GRN
BLK BLK/WHT
BLK
BLK
C38
1
Yes
Go to Step 2.
Go to Step 4.
"YEL/BLK", "YEL/GRN".
"BLK/WHT" or "BLK" cir-
cuit for power supply
open.
3
No
"WHT/RED" circuit open
or shorted to ground.
Go to Step 3.
Replace A/T relay.