Concorde V6-215 3.5L SOHC (1996)
Backup Lamp Switch: Description and Operation
CIRCUIT OPERATION
The Manual Valve Lever Position Sensor (MVLPS) is located in the transmission and serves two functions. One is to provide the Transmission
Control Module (TCM) with information on gear shift lever position and provide a ground for the engine starter motor relay coil side.
Circuit T41 is connected from the engine starter relay to the MVLPS and spliced to the TCM. This circuit is the ground path for the engine starter
motor relay coil side.
Circuits T42, T41, T3, and T1 are used to provide input to the TCM on gear shift lever position.
The second function of the MVLPS is for back-up lamp illumination. This is accomplished on circuits F20 and L1. The F20 circuit is the feed to
the back-up lamp switch. This circuit is protected by a 10 Amp fuse located in cavity 6 of the junction block and HOT in the RUN position only.
When the operator places the vehicle in REVERSE, circuits F20 and L1 are connected internal to the MVLPS. Circuit L1 is the feed from the
sensor to the back-up lamps. The L1 circuit is spliced and provides the feed to both lamps. Ground for the lamps is provided on circuit Z1 and
terminates at the left rear wheel well.
