5A
DTC P1730 (No.64): Engine Torque Signal Circuit Malfunction (M13A Model without VVT)
Wiring Diagram
1. TCM [A]: Terminal arrangement of TCM connector (M13 engine model with VVT) (viewed from harness side)
2. ECM [B]: Terminal arrangement of ECM connector (M13 engine model without VVT) (viewed from harness side)
DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
• Too short low signal of pulse signal from ECM to TCM continues out of specification.
or
• Too long low signal of pulse signal from ECM to TCM continues out of specification.
• Engine torque signal circuit malfunction.
• TCM
• ECM
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories.
3) After 1 minute passed from turning ignition switch ON, check DTC.
Troubleshooting
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 “E124-23” and to ECM at terminal “E113-5”.
4) If OK, turn ignition switch ON and measure voltage between terminal “E124-23” of disconnected harness side TCM connector and ground.
Is it 10 – 14 V?
“BLK/ORN” 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 “E124-23” of disconnected harness side TCM connector and terminal “E113-5” of disconnected harness side ECM connector.
Is continuity indicated?
Go to Step 4.
“BLK/ORN” circuit open.
4
Check Engine Torque Signal Circuit for Ground Short
Check continuity between terminal “E124-23” of disconnected harness side TCM connector and ground.
Is continuity indicated?
“BLK/ORN” 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.