Circuit Description

Transaxle Range Switch (TRS) is part of Park/Neutral Position (PNP) switch. Inputs from TRS indicate to PCM which position is selected by gear selector lever. PCM uses this information for ignition timing, EVAP canister purge, EGR and IAC valve operation.

Combination of 4 TRS input states determine PCM commanded shift pattern. Input voltage level at PCM is high when TRS is open, and low when TRS is closed. A problem which causes PCM to detect an invalid transaxle range input combination will set DTC P0705.

Condition for setting DTC:

• TRS inputs indicate an invalid combination for more than 10 seconds.