Suzuki SWIFT RS415 2017, Service Manual

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5A-90 Automatic Transmission:
TCM Power and Ground Circuit Check
S4RS0A5104039
Wiring Diagram
Troubleshooting
BLK
BLK
BLK
C34-1
C34-23
C34-6
YEL/BLK YEL/BLU
LT GRN/BLK
+BB
C34-24 WHT/RED
1
2
3
6
24 23
1
C34 C35
[A]
I4RS0A510023-
1. TCM 3. Ignition switch
2. A/T relay [A]: Terminal arrangement of TCM connector (viewed from harness side)
Step Action Yes No
1 Check TCM back-up power circuit
1) Disconnect TCM connector with ignition switch OFF.
2) Check for proper connection to TCM at “C34-24”
terminal.
3) If OK, check voltage at terminal “C34-24” of
disconnected TCM connector.
Is it 10 – 14 V?
Go to Step 2. “WHT/RED” circuit open
or shorted to ground.
2 Check TCM power circuit
1) Disconnect TCM connector with ignition switch OFF.
2) Check for proper connection to TCM at “C34-6” terminal.
3) If OK, turn ignition switch ON and check voltage at
terminal “C34-6” of disconnected TCM connector.
Is it 10 – 14 V?
Go to Step 4. Go to Step 3.
3 Check A/T relay operation
1) Check A/T relay operation referring to “A/T Relay
Inspection: ”.
Is check result satisfactory?
“YEL/BLK”, “YEL/BLU”,
“LT GRN/BLK” or “BLK”
circuit for power supply
open. Replace A/T relay.