Park/Neutral Position (PNP) Switch Circuit

1. Connect Jumper Wire (09843-18020) between terminals TE2 and E1 of DLC No. 1. See Figure. See COMPONENT LOCATIONS  under INTRODUCTION. Turn ignition on. Momentarily crank engine. Connect another jumper wire between terminals TE1 and E1 of DLC No. 1.
2. With transmission in Park, MIL should flash normal code (steady flashing). With transmission in Drive, MIL should flash Code 51. This indicates PNP switch circuit is okay.
   • Code 51 In Park & Drive

Check harness between PNP switch and ECM. If harness is okay, replace ECM.

• Normal Code In Park & Drive

Check PNP switch. See PARK/NEUTRAL POSITION (PNP) SWITCH . If PNP switch is okay, replace ECM.