Pinpoint Test C: The Control Illumination Is Always On - All Hardwired Illumination

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

C1 CHECK FOR RECORDED SJB DTCs FROM THE ON-DEMAND SELF-TEST
- Use the recorded results from the SJB self-test.
- Is DTC B2027 recorded?
1. YES : Go to C2.
2. NO : Go to C3.
C2 CHECK CIRCUITS 1403 (BK/WH), 19 (LB/RD), 293 (OG/RD), 203 (OG/LB), 2023 (YE/LB), 2030 (YE/WH) AND 1425 (GY/WH) FOR A SHORT TO VOLTAGE
- Key in OFF position.
- Disconnect: SJB C2280b
- Disconnect: SJB C2280e
- Disconnect: SJB C2280f
- Key in ON position.
- Do the dimmable backlighted components continue to illuminate?
1. YES : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
2. NO : Go to C3.
C3 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all the SJB 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 SJB . REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.