B0018

B0018 - Passenger Frontal Deployment Loop Voltage Out of Range

Repair Importance Level: 3/3

Repair Difficulty Level: 3/3

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Possible causes

Faulty Inflatable Restraint Instrument Panel
Inflatable Restraint Instrument Panel harness is open or shorted
Inflatable Restraint Instrument Panel circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

What does this mean?

Possible symptoms

Air Bag Warning Light ON

B0018 Description

The Inflatable Restraint Instrument Panel (I/P) module deployment loop consists of a dual stage I/P module, I/P module high control, and I/P module low control circuits for both stages 1 and 2. There are 2 shorting bars used within the I/P module connector which will short together the I/P module high and I/P module low control circuits for both stages 1 and 2 when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing. When the ignition is turned ON, the inflatable restraint Sensing and Diagnostic Module (SDM) performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in memory.

OBDII Code B0018 - Passenger Frontal Deployment Loop Voltage Out of Range - AutoCodes.com

B0018 Information for specific makes

B0018 BUICK Passenger Frontal Deployment Loop Voltage Out of Range
B0018 CADILLAC Passenger Frontal Deployment Loop Voltage Out of Range
B0018 CHEVROLET Passenger Frontal Deployment Loop Voltage Out of Range
B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range
B0018 PONTIAC Passenger Frontal Deployment Loop Voltage Out of Range
B0018 SATURN Passenger Frontal Deployment Loop Voltage Out of Range

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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B0018 Comments

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