OBDII Code List

B113B LINCOLN - Rear Audio Switch Circuit Short to Ground

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Rear Audio Switch
  • Rear Audio Switch harness is open or shorted
  • Rear Audio Switch circuit poor electrical connection
  • Faulty Rear Audio and Temperature Control (RATC) Module

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B113b Lincoln Description

The Rear Audio and Temperature Control (RATC) Module receives voltage and ground through the circuit. The RATC module receives input from the rear auxiliary audio controls through the circuit. It then sends these signals to the audio unit over the Audio Corporate Protocol (ACP) network through circuits. The RATC module sets the OBDII code when a short to ground is detected on the circuitry between the RATC module and the rear auxiliary audio switch.
OBDII Code B113b Lincoln - Rear Audio Switch Circuit Short to Ground -

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