Pinpoint Test J: The Power Supply Relay Is Inoperative - Switched System Power (SSP) 4

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 EXTERIOR LIGHTING and the SSP Relay Index for complete details of SSP1 powered features.

J1 CHECK THE BATTERY JUNCTION BOX (BJB)
- Key in OFF position.
- Disconnect: SSP4 Relay C445.
- Measure the voltage between the SSP4 relay C445-86, circuit 30-DG57 (RF/YE), harness side and ground; and between the SSP4 relay C445-30, circuit 30-DG58 (RD/BU), harness side and ground.
  
  Fig 1: Measuring Voltage Between SSP4 Relay C445-86, Circuit 30-DG57 (RF/YE), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Are the voltages greater than 10 volts?
Result/Action to Take
1. Yes : GO to J2.
2. No : REPAIR or INSTALL a new BJB. TEST the system for normal operation.
J2 CHECK CIRCUIT 31S-DG57 (BK/YE) FOR AN OPEN
- Key in ON position.
- Measure the resistance between the SSP4 relay C445-85, circuit 31S -DG57 (BK/YE), harness side and ground.
  
  Fig 2: Measuring Resistance Between SSP4 Relay C445-85, Circuit 31S -DG57 (BK/YE), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
1. Yes : GO to J3.
2. No : REPAIR the circuit.
  TEST the system for normal operation.
J3 CHECK THE SSP4 RELAY
- Carry out the SSP4 relay component test.
  Refer to COMPONENT TESTING .
- Is the SSP4 relay OK?
1. Yes : REPAIR circuit 30S-DB16(RD/GN).
2. No : INSTALL a new SSP4 relay. TEST the system for normal operation.