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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1614 (Vehicle Dynamic Suspension) >> Diagnostic Tests >> Vehicle Dynamic Suspension >> Pinpoint Tests >> Pinpoint Test F: DTCs C1790/C1795 - LR/RR Air Suspension Air Spring Solenoid Output Circuit Failure >> PINPOINT TEST F: DTCs C1790/C1795 - LR/RR AIR SUSPENSION AIR SPRING SOLENOID OUTPUT CIRCUIT FAILURE

PINPOINT TEST F: DTCs C1790/C1795 - LR/RR AIR SUSPENSION AIR SPRING SOLENOID OUTPUT CIRCUIT FAILURE

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
  1. F1 CHECK CIRCUITS 1114 (BN/PK) AND 1115 (TN/WH) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: VDM C2131b
    • Disconnect: LR Air Spring Solenoid C4044
    • Disconnect: RR Air Spring Solenoid C4045
      • Fig 1: Checking Circuit For Open
      GF0013872Courtesy of FORD MOTOR CO.
    • Measure the resistance between VDM C2131b-2, circuit 1115 (TN/WH) harness side and RR air spring solenoid C4045-1, harness side.
      • Fig 2: Checking Circuit For Open
      GF0013873Courtesy of FORD MOTOR CO.
    • Measure the resistance between VDM C2131b-3, circuit 1114 (BN/PK) harness side and LR air spring solenoid C4044-1, harness side.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  F2.
    2. NO  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  2. F2 CHECK CIRCUITS 1114 (BN/PK) AND 1115 (TN/WH) FOR A SHORT TO VOLTAGE 
    • Key in ON position.
      • Fig 3: Checking Circuits For Short To Voltage
      GF0013874Courtesy of FORD MOTOR CO.
    • Measure the voltage between ground and:
      • VDM C2131b-3, circuit 1114 (BN/PK), harness side.
      • VDM C2131b-2, circuit 1115 (TN/WH), harness side.
    • Is any voltage present? 
    1. YES  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  F3.
  3. F3 CHECK CIRCUITS 1114 (BN/PK) AND 1115 (TN/WH) FOR A SHORT TO GROUND 
    • Key in OFF position.
      • Fig 4: Checking Circuits For Short To Ground
      GF0013875Courtesy of FORD MOTOR CO.
    • Measure the resistance between ground and:
      • VDM C2131b-3, circuit 1114 (BN/PK), harness side.
      • VDM C2131b-2, circuit 1115 (TN/WH), harness side.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  F4.
    2. NO  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  4. F4 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
    • Key in OFF position.
      • Fig 5: Checking Circuit For Open
      GF0013876Courtesy of FORD MOTOR CO.
    • Measure the resistance between ground and:
      • LR air spring solenoid C4044-2, circuit 57 (BK), harness side.
      • RR air spring solenoid C4045-2, circuit 57 (BK), harness side.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  F5.
    2. NO  : REPAIR circuit 57 (BK). CLEAR the DTCs. REPEAT the self-test.
  5. F5 CHECK THE LR AND RR AIR SPRING SOLENOIDS 
    • Key in OFF position.
    • Measure the resistance between:
      • LR air spring solenoid C4044-1, component side, and C4044-2, component side.
      • RR air spring solenoid C4045-1, component side, and C4045-2, component side.
    • Are the resistances between 10 and 17 ohms? 
    1. YES  : INSTALL a new VDM. REFER to Vehicle Dynamics Module (VDM) . CLEAR the DTCs. REPEAT the self-test.
    2. NO  : INSTALL a new LR or RR air spring solenoid. REFER to Air Spring Solenoid Valve . CLEAR the DTCs. REPEAT the self-test.
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