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Home >> Suzuki >> 2007 >> Aerio Base, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission >> Diagnostic Information and Procedures >> DTC P1730 (No. 64): Engine Torque Signal Circuit Malfunction >> DTC Troubleshooting
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DTC Troubleshooting

DTC TROUBLESHOOTING CHART

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 
  1. Turn ignition switch OFF.
  2. Disconnect TCM and ECM connectors from TCM and ECM.
  3. Check proper connection to TCM at terminal "G07-23" and to ECM at terminal "G04-28".
  4. If connection is OK, turn ignition switch ON and measure voltage between terminal "G07-23" and ground.

Is it 10 - 14 V? 		 "RED/WHT" circuit shorted to power circuit. Go to Step 3.
3  Check engine torque signal circuit for open 
  1. Turn ignition switch OFF.
  2. Check continuity between terminal "G07-23" of disconnected harness side TCM connector and terminal "G04-28" of disconnected harness side ECM connector.

Is continuity indicated? 		 Go to Step 4. "RED/WHT" circuit open.
4  Check engine torque signal circuit for ground short 
  1. Check continuity between terminal "G07-23" of disconnected harness side TCM connector and ground.

Is continuity indicated? 		 "RED/WHT" circuit shorted to ground Intermittent trouble or faulty TCM or ECM. Check for intermittent referring to INTERMITTENT AND POOR CONNECTION INSPECTION . If OK, substitute a known-good TCM or ECM and recheck.
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