Sub-Throttle Position (Sub-TP) Sensor

NOTE: Vehicles with Traction Control System (TRAC) are equipped with a main TP sensor and a sub-TP sensor. The following procedure applies to sub-TP sensor. For main TP sensor, see THROTTLE POSITION (TP) SENSOR .

Disconnect sub-TP sensor connector. Measure resistance across specified terminals of sub-TP sensor connector. See SUB-TP SENSOR RESISTANCE table. See Fig 1. If resistance is not as specified , adjust sub-TP sensor. See SUB-THROTTLE POSITION (SUB-TP) SENSOR under MISCELLANEOUS CONTROLS in appropriate ADJUSTMENTS article.

If PNP switch is out of adjustment, voltage signals may not be correctly applied to ECM, causing a trouble code to set. Before assuming PNP switch is faulty, adjust PNP switch. See PARK/NEUTRAL POSITION (PNP) SWITCH under MISCELLANEOUS CONTROLS in appropriate ADJUSTMENTS article. Recheck resistance. If resistance is still not as specified, replace sub-TP sensor.

SUB-TP SENSOR RESISTANCE

Throttle Plate

Sub-TP Sensor Terminals

Ohm Reading

Throttle Fully Closed

VTA2 & E2

340-6300

.012" (.35 mm) ⁽¹⁾

IDL2 & E2

500 Or Less

.020" (.50 mm) ⁽¹⁾

IDL2 & E2

Infinite (Open)

Throttle Fully Open

VTA2 & E2

2400-11,200

All Positions

VC & E2

3100-7200

⁽¹⁾	Remove sub-throttle actuator from throttle body. Insert feeler gauge between sub-throttle valve stop screw and gear.

Fig 1: Identifying Terminals Of Sub-TP Sensor & TP Sensor