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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Instrument Cluster Illumination & Instrument Panel Illumination) >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test A: The Control Illumination Is Inoperative - All Hardwired Illumination >> Pinpoint Test A: The Control Illumination Is Inoperative - All Hardwired Illumination

Pinpoint Test A: The Control Illumination Is Inoperative - 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.
  1. A1 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  A3.
    2. NO  : Go to  A2.
  2. A2 CHECK THE INSTRUMENT PANEL DIMMER SWITCH 
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: SJB DataLogger
    • Monitor the SJB PID (PANELINT) while rotating the instrument panel dimmer switch from the lowest setting to the highest setting.
    • Does the PID indicate the switch is operating correctly? 
    1. YES  : Go to  A4.
    2. NO  : INSTALL a new instrument panel dimmer switch. CLEAR the DTCs. REPEAT the self-test.
  3. A3 CHECK CIRCUITS 1403 (BK/WH), 19 (LB/RD), 293 (OG/RD), 203 (OG/LB), 2023 (YE/LB), 2029 (LB/WH), 2030 (YE/WH) AND 1425 (GY/WH) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: SJB C2280b
    • Disconnect: SJB C2280e
    • Disconnect: SJB C2280f
    • Connect a fused (5A) jumper wire between the SJB connector and battery positive as follows:
      Suspect Illuminated Component Location SJB Connector-Pin Circuit
      Instrument panel dimmer switch C2280b-8 1403 (BK/WH)
      Transmission range (TR) indicator/ambient lighting switch (if equipped) C2280e-12 19 (LB/RD)
      Convertible top switch (part of the overhead console) (if equipped) C2280f-6 293 (OG/RD)
      Speed control switch(es) C2280b-10 203 (OG/LB)
      Headlamp switch C2280b-6 2023 (YE/LB)
      Message center switch C2280b-9 2030 (YE/WH)
      Hazard flasher switch C2280b-11 2029 (LB/WH)
      Climate control assembly C2280b-23 1425 (GY/WH)
    • Did the jumper wire fail on any of the circuits? 
    1. YES  : REMOVE the jumper wire. REPAIR the circuit in question for a short to ground. CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  A4.
  4. A4 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.
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