Pinpoint Test G: The Power Supply Relay Is Inoperative - Switched System Power (SSP) 1

WARNING: This page is about a different car, the 2005 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 EXTERIOR LIGHTING and the Switched System Power (SSP) Relay Index for complete details of SSP1 powered features.

G1 CHECK THE BATTERY JUNCTION BOX (BJB)
- Key in OFF position.
- Disconnect: SSP1 Relay C441.
- Measure the voltage between SSP1 relay C441-86, circuit 30-DG51 (RD/YE), harness side and ground; and between SSP1 relay C441-30, circuit 30-DG52 (RD/BU), harness side and ground.
  
  Fig 1: Measuring The Voltage Between SSP1 Relay C441-86, Circuit 30-DG51 And Ground; And Between SSP1 Relay C441-30, Circuit 30-DG52 And Ground
  Courtesy of FORD MOTOR CO.
- Are the voltages greater than 10 volts?
- Yes : GO to G2.
- No : REPAIR or INSTALL a new BJB. TEST the system for normal operation.
G2 CHECK CIRCUIT 31S-DG51 (BK/YE) FOR AN OPEN
- Key in ON position.
- Measure the resistance between SSP1 relay C441-85, circuit 31S-DG51 (BK/YE), harness side and ground.
  
  Fig 2: Measuring The Resistance Between SSP1 Relay C441-85, Circuit 31S-DG51 (BK/YE), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to G3.
- No : REPAIR the circuit. TEST the system for normal operation.
G3 CHECK THE SSP1 RELAY
- Carry out the SSP1 relay component test. Refer to COMPONENT TESTING for component testing.
- Is the SSP1 relay OK?
- Yes : REPAIR circuit 30-DD3 (RD/OG).
- No : INSTALL a new SSP1 relay. TEST the system for normal operation.