Pinpoint Test G: The Demand Lighting Is Inoperative: Testing

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

G1 CHECK CIRCUIT 705 (LG/OG) FOR AN OPEN
- Key in OFF position.
- Disconnect: Overhead Console (w/o roof opening panel) C929 or (with roof opening panel) C930.
- Measure the resistance between SJB C2280e-16, circuit 705 (LG/OG) and:
  - overhead console (with roof opening panel) C930-3, circuit 705 (LG/OG).
  - overhead console (without roof opening panel) C929-1, circuit 705 (LG/OG).
    
    Fig 1: Measuring Resistance Between SJB C2280E-16, Circuit 705 (LG/OG)
    Courtesy of FORD MOTOR CO.
- Are the resistances less than 5 ohms?
- Yes : GO to G2.
- No : REPAIR circuit 705 (LG/OG) for an open. TEST the system for normal operation.
G2 CHECK SJB PINS AND CONNECTORS
- Disconnect all SJB module connectors. Check for:
  - corrosion
  - pushed-out pins
- Connect all SJB module connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
- No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.