Suzuki Liana RH413, Service Manual

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5A-70 Automatic Transmission/Transaxle:
DTC P1730 (No. 64): Engine Torque Signal Circuit Malfunction
S3RH0A5104036
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) After 1 minute passed from turning ignition switch ON, check DTC, pending DTC and freeze frame data, if
available.
DTC Troubleshooting
4
C41 G04 G03
5
23
G08 G07
12V
3
BLU/RED G03-5 G07-23
2
1
I2RH0B510032-01
1. TCM 3. Terminal arrangement of TCM connector (viewed from harness side)
2. ECM 4. Terminal arrangement of ECM connector (viewed from harness side)
DTC detecting condition Trouble area
• Too short low signal of pulse signal from ECM to TCM
continues out of specification.
• Too long low signal of pulse signal from ECM to TCM
continues out of specification.
• Engine torque signal circuit malfunction
• TCM
• ECM
Step Action Yes No
1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check”.
2 Check engine torque signal circuit for IG short
1) Turn ignition switch OFF.
2) Disconnect TCM and ECM connectors from TCM and
ECM.
3) Check proper connections to TCM at terminal “G07-23”
and to ECM at terminal “G03-5”.
4) If OK, turn ignition switch ON and measure voltage
between terminal “G07-23” of disconnected harness
side TCM connector and ground.
Is it 10 – 14 V?
“BLU/RED” circuit
shorted to power circuit. Go to Step 3.