Test Description

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. 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

Listen for an audible click when the DRL relay operates. Command both the ON and OFF states. Repeat the commands as necessary.

Tests for voltage at the coil side of the DRL relay.

Verifies that the body control module is providing ground to the DRL relay.

Tests if ground is constantly being applied to the DRL relay.

Fig 1: DTC B2602 (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC B2602 (2 Of 2)

Courtesy of GENERAL MOTORS CORP.