DTC P1724 (No.33): Throttle Position Signal Circuit Low (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.
Throttle position sensor or its circuit malfunction.
Throttle position signal circuit from ECM to TCM short to ground.
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories.
3) Turn ignition switch ON.
4) Depress accelerator pedal fully and keep it for 10 seconds.
5) Release accelerator pedal and keep it for 10 seconds.
6) Check DTC.
Step Action YES NO
Was A/T System Check performed?
Go to Step 2.
Is there DTC related to throttle position sensor (P0120)?
Go to corresponding DTC Table:M13A without VVT .
Go to Step 3.
Check Throttle Position Signal Circuit for Ground Short
Check continuity between terminal “E124-6” of disconnected harness side TCM connector and ground.
Is continuity indicated?
“BLK/RED” 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.