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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System >> Diagnosis And Testing >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test E: DTC B1317/B1318 >> Normal Operation - Occupant Classification System Module (OCSM)

Normal Operation - Occupant Classification System Module (OCSM)

The Occupant Classification System Module (OCSM) continuously monitors the input voltage for correct operation. If the OCSM detects input voltage below 8 volts, it will store DTC B1318 in memory. If the OCSM  detects input voltage above 17.8 volts, it will store DTC B1317 in memory. If the OCSM  sets DTC B1317 or B1318, it will send a fault message to the RCM  . The RCM  will then send a message to the IC  module to illuminate the air bag warning indicator.

DTC DESCRIPTION

DTC Description Fault Trigger Conditions
  • B1317 Battery Voltage High
 If the Restraints Control Module (RCM) detects voltage above 17.5 volts with a Supplemental Restraint System (SRS) fault or above 20 volts without a SRS  fault, it will set this DTC.
  • B1318 Battery Voltage Low
 If the RCM  detects voltage below 9 volts, it will set this DTC.
  • B1317 Battery Voltage High
 If the OCSM  detects voltage above 17.8 volts, it will set this DTC.
  • B1318 Battery Voltage Low
 If the OCSM  detects voltage below 8 volts, it will set this DTC.

This pinpoint test is intended to diagnose the following: 

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