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B097B BUICK

B097B BUICK - Power Mode Start Switch Circuit

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

  • Faulty Ignition Mode Switch
  • Ignition Mode Switch harness is open or shorted
  • Ignition Mode Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

Tech notes

B097B 00: Power Mode Start Switch Circuit Malfunction
B097B 02: Power Mode Start Switch Circuit Short to Ground
B097B 04: Power Mode Start Switch Circuit Open
B097B 08: Power Mode Start Switch Circuit Performance - Signal Invalid
B097B 61: Power Mode Start Switch Circuit - Stuck

Possible symptoms

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

B097b Buick Description

The Ignition Mode Switch has 2 LED's that indicate the vehicle power mode. When the vehicle is in the off mode, both LED's will be off. Pressing the ignition mode switch button once (without the brake pedal applied), the vehicle enters the accessory mode and the amber LED (ACC) will illuminate. The accessory mode has a 5 minute timeout to reduce battery drain. Pressing the ignition mode switch button a second time (without the brake pedal applied), the vehicle enters the run/start mode (without the engine running) and the green LED (Run/Start) will illuminate. Pressing and holding the push button start switch for at least 5 seconds will place the vehicle in run/start mode (without the vehicle running) and the green LED (Run/Start) will illuminate. With the ignition off (with the brake pedal applied), pressing the ignition mode switch button once, the vehicle will enter run/start mode and the green LED (run/start) will illuminate. This will start the engine. Both LED's have the voltage supplied from the Body Control Module (BCM). The ignition mode switch sends the ignition mode switch status to the Passive Entry Passive Start Module (PEPS) and to the BCM. The PEPS module sends a redundant signal to the BCM with the ignition mode switch status.
OBDII Code B097b Buick - Power Mode Start Switch Circuit - AutoCodes.com

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