Normal Operation
WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Under normal operation, ground is provided to the rear climate control switch through circuit 676 (PK/OG). When the switch is pressed, ground through an internal resistor is sent to the Rear Audio and Temperature Control (RATC) module through circuit 1349 (PK/LG).
- DTC B113E Rear Climate Control Switch Circuit Short To Ground - The module senses excessive voltage drop on the switch output circuit, indicating a short directly to ground.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Rear climate control switch
- RATC module