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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 584 (Anti-Lock Brake System) >> Diagnostic Information And Procedures >> DTC C1291: Open Brake Lamp Switch Contacts During Deceleration; C1293: Code C1291 Set in Previous Ignition Cycle (W/NW9) >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 3.  Tests the circuit for a change in states.
  2. 5.  Tests for proper operation of the circuit by bypassing the stoplamp switch. If the fuse in the jumper opens when you perform this test, the signal circuit of the stoplamp switch is shorted to ground.
Fig 1: DTC C1291 or C1293 (w/NW9) (1 Of 2)
G01582458Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC C1291 or C1293 (w/NW9) (2 Of 2)
G01582459Courtesy of GENERAL MOTORS CORP.
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