DTC P0740 Hummer

Glass Breakage Sensor

Glass Breakage Sensor

Description

If the control module registers that communication with the glass breakage sensor own control module is faulty when: The alarm system is voltage charged or the alarm activated or deactivated Diagnostic trouble code (DTC) GLA-421 is stored after approximately 2 seconds.

Cause and Solution

Short-circuit to ground or voltage in communication cable.Open-circuit in communication cable.Interference affecting communication cable.Defective glass breakage sensor.

Video Guide

Duration: PT4M12S | Uploaded: 2020-06-20

Diagnostic Info

  • DTC Code: P0740
  • Brand: Hummer
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