chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

Engine Controls - Code 34, Air Flow Sensor Voltage Low|Page 2641 > < Engine Controls - Code 34, Air Flow Sensor Voltage Low|Page 2639
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Chart C-13 - Functional Check of MAF Burn-off Control

    In order for the burn-off cycle to function, the 12 volts on terminal E must remain until the burn-off signal occurs. This checks for the 12 volt shut
down delay.

2.

Grounding the ALCL terminal E causes the burn-off module to activate burnoff. This check will determine if the burn off module and wiring are
OK.

Engine Controls - Code 34, Air Flow Sensor Voltage Low|Page 2641 > < Engine Controls - Code 34, Air Flow Sensor Voltage Low|Page 2639