| CAUTION | If ECM replacement is instructed in following testing, always ensure ECM harness connector and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. |
Circuit Description
The SUB-TP sensor is similar to the main TP sensor. SUB-TP sensor is used for Traction Control System (TRAC). DTC is set when ECM consistently detects less than .1 volt from VTA2 circuit and closed SUB-TP switch is off. DTC will also set if ECM detects more than 4.9 volts from circuit VTA2. Possible causes are
- Open or short in SUB-TP sensor circuit.
- SUB-TP sensor.
- ECM.