DTC Confirmation Test

Depending on equipment available, use one of the following to set DTC:

• Using scan tool, turn ignition on and select MODE 1 on scan tool. Ensure engine coolant temperature is 14-104°F (-10 -40°C). If engine temperature is more than specified, allow it to cool down. Using DVOM, measure voltage between PCM connector terminal No. 62 and ground by backprobing connector. See Figure. Ensure voltage is less than 4.8 volts. Start engine and idle for at least 90 seconds. Turn engine off. Select MODE 3 on scan tool.
• Using MIL, turn ignition on. Using DVOM, measure voltage between PCM connector terminal No. 51 and ground by backprobing connector. See Figure. If voltage is 1.5 volts or less, allow engine to cool. Voltage will rise as engines cools. Measure voltage between PCM harness connector terminal No. 62 and ground by backprobing connector. Ensure voltage is 4.8 volts or less. Start engine and idle for at least 70 seconds. Turn ignition off and wait at least 5 seconds. Turn ignition on and retrieve DTCs using MIL. See SELF-DIAGNOSTIC SYSTEM in TESTS W/CODES - INTRODUCTION article.