CKT Test TP - TPS Sensor

Fig 1: TP Sensor Circuit & Connector Terminals ID

1) Check System Integrity  Visually check all wiring, connectors and components for evidence of damage, shorting or looseness. If fault is found, repair as necessary. If no fault is found, go to next step.

2) Check TP Sensor Voltage  Turn ignition off. Install breakout box. Install PCM to breakout box. Turn ignition on. Measure voltage at TP test pin at breakout box. Slowly depress accelerator pedal, and compare voltage to specifications shown in VOLTAGE & RESISTANCE SPECIFICATIONS (TP SENSOR) table. If voltage is as specified, and no other problem or code is found, replace PCM. If voltage is not as specified, go to next step.

3) Check VREF  Turn ignition off. Disconnect TP sensor connector. Turn ignition on. Measure voltage at VREF terminal of TP sensor connector. On 2.0L A/T, if voltage is 4.5-5.5 volts, go to next step. If voltage is not 4.5-5.5 volts, go to TEST VREF.

4) Check Wires To PCM (2.0L A/T)  Turn ignition off. With breakout box installed, disconnect PCM connectors. Disconnect TP sensor connector. Measure and record resistances of TP wire and SIG RTN wire between test pins at breakout box and TP sensor connector. Measure and record resistance between ground and TP test pin at breakout box. If resistances are less than 5 ohms between test pins and TP sensor connector, and more than 10,000 ohms between ground and TP test pin, replace TP sensor. If resistance is not as specified, repair TP wire between TP sensor connector and PCM.