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Home >> Lincoln >> 2009 >> Town Car V8-4.6L >> Repair and Diagnosis >> Restraints and Safety Systems >> Air Bag Systems >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Test W: DTC B2792 >> W16-W30

W16-W30




W16 CHECK FOR A SHORT BETWEEN DRIVER AIR BAG MODULE LOOP 2 CIRCUITS AND DEPLOYABLE STEERING COLUMN CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Remove the driver air bag module. Refer to Driver Air Bag Module Driver Air Bag Module.
- Disconnect: Deployable Steering Column C2318.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-5, circuit 1516 (YE/WH, harness side and RCM C310a-21, circuit 2136 (OG), harness side.
- C310a-5, circuit 1516 (YE/WH), harness side and RCM C310a-22, circuit 2137 (RD/BU), harness side.
- C310a-6, circuit 1517 (RD/OG), harness side and RCM C310a-21, circuit 2136 (OG), harness side.
- C310a-6, circuit 1517 (RD/OG), harness side and RCM C310a-22, circuit 2137 (RD/BU), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

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W17 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 1 CIRCUITS AND PASSENGER AIR BAG MODULE LOOP 2 CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: RCM C310a and C310b.
- Disconnect: Passenger Air Bag Module C256.
- Measure the resistance between RCM:
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310a-13, circuit 1518 (BK/WH), harness side.
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310a-14, circuit 1519 (LG/RD), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310a-13, circuit 1518 (BK/WH), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310a-14, circuit 1519 (LG/RD), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

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W18 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 1 CIRCUITS AND DRIVER SAFETY BELT PRETENSIONER CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Driver Safety Belt Retractor Pretensioner C323.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310b-17, circuit 1079 (LG/RD), harness side.
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310b-18, circuit 1080 (LG/BK), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310b-17, circuit 1079 (LG/RD), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310b-18, circuit 1080 (LG/BK), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

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W19 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 1 CIRCUITS AND PASSENGER SAFETY BELT PRETENSIONER CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Passenger Safety Belt Retractor Pretensioner C303.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310b-35, circuit 1081 (YE/RD), harness side.
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310b-36, circuit 1082 (LB/BK), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310b-35, circuit 1081 (YE/RD), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310b-36, circuit 1082 (LB/BK), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

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W20 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 1 CIRCUITS AND DRIVER SEAT SIDE AIR BAG MODULE CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Driver Seat Side Air Bag Module C315.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310b-1, circuit 1257 (WH/LB), harness side.
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310b-2, circuit 1258 (RD), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310b-1, circuit 1257 (WH/LB), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310b-2, circuit 1258 (RD), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

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W21 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 1 CIRCUITS AND PASSENGER SEAT SIDE AIR BAG MODULE CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Passenger Seat Side Air Bag Module C316.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310b-21, circuit 1259 (WH/YE), harness side.
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310b-22, circuit 1260 (BN/YE), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310b-21, circuit 1259 (WH/YE), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310b-22, circuit 1260 (BN/YE), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

-------------------------------------------------
W22 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 1 CIRCUITS AND DEPLOYABLE STEERING COLUMN CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Deployable Steering Column C2318.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310a-21, circuit 2136 (OG), harness side.
- C310a-3, circuit 607 (LB/OG), harness side and RCM C310a-22, circuit 2137 (RD/BU), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310a-21, circuit 2136 (OG), harness side.
- C310a-4, circuit 616 (PK/BK), harness side and RCM C310a-22, circuit 2137 (RD/BU), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

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W23 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 2 CIRCUITS AND DRIVER SAFETY BELT PRETENSIONER CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Driver Safety Belt Retractor Pretensioner C323.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310b-17, circuit 1079 (LG/RD), harness side.
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310b-18, circuit 1080 (LG/BK), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310b-17, circuit 1079 (LG/RD), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310b-18, circuit 1080 (LG/BK), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

-------------------------------------------------
W24 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 2 CIRCUITS AND PASSENGER SAFETY BELT PRETENSIONER CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Passenger Safety Belt Retractor Pretensioner C303.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310b-35, circuit 1081 (YE/RD), harness side.
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310b-36, circuit 1082 (LB/BK), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310b-35, circuit 1081 (YE/RD), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310b-36, circuit 1082 (LB/BK), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

-------------------------------------------------
W25 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 2 CIRCUITS AND DRIVER SEAT SIDE AIR BAG MODULE CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Driver Seat Side Air Bag Module C315.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310b-1, circuit 1257 (WH/LB), harness side.
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310b-2, circuit 1258 (RD), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310b-1, circuit 1257 (WH/LB), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310b-2, circuit 1258 (RD), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

-------------------------------------------------
W26 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 2 CIRCUITS AND PASSENGER SEAT SIDE AIR BAG MODULE CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Passenger Seat Side Air Bag Module C316.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310b-21, circuit 1259 (WH/YE), harness side.
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310b-22, circuit 1260 (BN/YE), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310b-21, circuit 1259 (WH/YE), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310b-22, circuit 1260 (BN/YE), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

-------------------------------------------------
W27 CHECK FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 2 CIRCUITS AND DEPLOYABLE STEERING COLUMN CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Air Bag Module C256.
- Disconnect: Deployable Steering Column C2318 .
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310a-21, circuit 2136 (OG), harness side.
- C310a-13, circuit 1518 (BK/WH), harness side and RCM C310a-22, circuit 2137 (RD/BU), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310a-21, circuit 2136 (OG), harness side.
- C310a-14, circuit 1519 (LG/RD), harness side and RCM C310a-22, circuit 2137 (RD/BU), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

-------------------------------------------------
W28 CHECK FOR A SHORT BETWEEN DRIVER SAFETY BELT RETRACTOR PRETENSIONER CIRCUITS AND PASSENGER SAFETY BELT RETRACTOR PRETENSIONER CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Passenger Safety Belt Retractor Pretensioner C303.
- Disconnect: Driver Safety Belt Retractor Pretensioner C323.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310b-17, circuit 1079 (LG/RD), harness side and RCM C310b-35, circuit 1081 (YE/RD), harness side.
- C310b-17, circuit 1079 (LG/RD), harness side and RCM C310b-36, circuit 1082 (LB/BK), harness side.
- C310b-18, circuit 1519 (LG/BK), harness side and RCM C310b-35, circuit 1081 (YE/RD), harness side.
- C310b-18, circuit 1519 (LG/BK), harness side and RCM C310b-36, circuit 1082 (LB/BK), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

-------------------------------------------------
W29 CHECK FOR A SHORT BETWEEN DRIVER SAFETY BELT RETRACTOR PRETENSIONER CIRCUITS AND DRIVER SEAT SIDE AIR BAG MODULE CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Driver Safety Belt Retractor Pretensioner C323.
- Disconnect: Driver Seat Side Air Bag Module C315.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310b-17, circuit 1079 (LG/RD), harness side and RCM C310b-1, circuit 1257 (WH/LB), harness side.
- C310b-17, circuit 1079 (LG/RD), harness side and RCM C310b-2, circuit 1258 (RD), harness side.
- C310b-18, circuit 1080 (LG/BK), harness side and RCM C310b-1, circuit 1257 (WH/LB), harness side.
- C310b-18, circuit 1080 (LG/BK), harness side and RCM C310b-2, circuit 1258 (RD), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

-------------------------------------------------
W30 CHECK FOR A SHORT BETWEEN DRIVER SAFETY BELT RETRACTOR PRETENSIONER CIRCUITS AND PASSENGER SEAT SIDE AIR BAG MODULE CIRCUITS


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Disconnect: Driver Safety Belt Retractor Pretensioner C323.
- Disconnect: Passenger Seat Side Air Bag Module C316.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM:
- C310b-17, circuit 1079 (LG/RD), harness side and RCM C310b-21, circuit 1259 (WH/YE), harness side.
- C310b-17, circuit 1079 (LG/RD), harness side and RCM C310b-22, circuit 1260 (BN/YE), harness side.
- C310b-18, circuit 1080 (LG/BK), harness side and RCM C310b-21, circuit 1259 (WH/YE), harness side.
- C310b-18, circuit 1080 (LG/BK), harness side and RCM C310b-22, circuit 1260 (BN/YE), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to W38.

No
REPAIR the affected circuits. GO to W40.

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