DTC Confirmation Test

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before performing confirmation test, ensure battery voltage is greater than 10.5 volts.

Malfunction is detected when either one-degree signal or 180-degree signal is not sent to PCM during engine cranking. Possible causes are:

CMP sensor circuit is open or shorted.
Defective CMP sensor.
Defective starter.
Starter circuit fault.
Weak battery.

Connect scan tool to Data Link Connector (DLC). See Figure . Turn ignition on. Using scan tool, select DATA MONITOR. Crank engine for at least 2 seconds and run engine at idle for at least 5 seconds. If first trip DTC is sets, perform DIAGNOSTIC PROCEDURE . If first trip DTC is not set, problem may be intermittent. See TESTING PROCEDURE under SELF-DIAGNOSTIC SYSTEM.