DR-18C Checking Throttle Position Sensor

Complete Driveability Test 18, Step B before proceeding.

This test must be performed with engine warm.

1. With diagnostic read-out tool connected to engine test connector, start engine.
2. Place system into Engine Running Test Mode 65.
3. Slowly increase engine speed to 2,000 RPM.
4. If display voltage increases as engine speed increases, proceed to Test 18 step D.
5. If display voltage does not increase as engine speed increases, replace throttle position sensor.