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Pinpoint Test F: The Power Supply Relay Is Inoperative - All Switched System Power (SSP) Features

WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The ignition switch must be cycled from OFF to ON to enable the SSP feature.
NOTE: Refer to Principles of Operation and the SSP Relay Index for complete detail of SSP-powered features.
  1. FI CHECK THE BJB 
    • Key in OFF position.
    • Disconnect: SSP1 Relay C441.
    • Measure the voltage between the SSP1 relay C441 -86, circuit 30-DG51 (RD/YE), harness side and ground.
      Fig 1: Measuring Voltage Between SSP1 Relay C441 -86, Circuit 30-Dg51 (RD/YE), Harness Side And Ground
      G03202726Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to F2.
    2. No  : REPAIR or INSTALL a new BJB. TEST the system for normal operation.
  2. F2 CHECK THE CONTROL GROUND CIRCUIT FOR SHORT TO POWER 
    • Key in ON position.
    • Measure the voltage between the SSP1 relay C441 -85, circuit 31S-DG51 (BK/YE), harness side and ground.
      Fig 2: Measuring Voltage Between SSP1 Relay C441 -85, Circuit 31S-Dg51 (BK/YE), Harness Side And Ground
      G03202727Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to  F4.
    2. No  : GO to F3.
  3. F3 CHECK FOR GROUND ON CIRCUIT 31S-DG51 (BK/YE) 
    • Measure the resistance between the SSP1 relay C441 -85, circuit 31S-DG51 (BK/YE), harness side and ground.
      Fig 3: Measuring Resistance Between SSP1 Relay C441 -85, Circuit 31S-Dg51 (BK/YE), Harness Side And Ground
      G03202728Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : INSTALL a new SSP1 relay. TEST the system for normal operation.
    2. No  : REPAIR the circuit between the SSP relays and the electronic modules. TEST the system for normal operation.
  4. F4 CHECK THE SSP RELAY(S) 
    • Disconnect: SSP2 Relay C442.
    • Disconnect: SSP3 Relay C444.
    • Disconnect: SSP4 Relay C445.
    • Carry out the relay component test on each SSP relay;

      Refer to COMPONENT TESTING .

    • Does each relay pass the component test? 
    1. Yes  : GO to F5.
    2. No  : INSTALL a new SSP relay. TEST the system for normal operation.
  5. F5 CHECK THE FEM FOR SHORT TO POWER 
    • Key in OFF position.
    • Disconnect: FEM C201b.
    • Key in ON position.
    • Measure the voltage between the SSP1 relay C441 -85, circuit 31S-DG51 (BK/YE), harness side and ground.
      Fig 4: Measuring Voltage Between SSP1 Relay C441 -85, Circuit 31S-Dg51 (BK/YE), Harness Side And Ground
      G03202729Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to F6.
    2. No  : GO to  F7.
  6. F6 CHECK THE REM FOR SHORT TO POWER 
    • Key in OFF position.
    • Disconnect: REM C420b.
    • Key in ON position.
    • Measure the voltage between the SSP1 relay C441 -85, circuit 31S-DG51 (BK/YE), harness side and ground.
      Fig 5: Measuring Voltage Between SSP1 Relay C441 -85, Circuit 31S-Dg51 (BK/YE), Harness Side And Ground
      G03202730Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : REPAIR the SSP ground control circuit. TEST the system for normal operation.
    2. No  : GO to  F8.
  7. F7 CHECK FOR FEM OPERATION 
    • Key in OFF position.
    • Disconnect all FEM connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all FEM connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. Yes  : INSTALL a new FEM. Refer to MODULE COMMUNICATIONS NETWORK . TEST the system for normal operation.
    2. No  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. REPEAT the self-test.
  8. F8 CHECK FOR REM OPERATION 
    • Key in OFF position.
    • Disconnect all REM connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all REM connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. Yes  : INSTALL a new REM. Refer to MODULE COMMUNICATIONS NETWORK . TEST the system for normal operation.
    2. No  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. REPEAT the self-test.
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