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Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1132 (Instrument Cluster System And Panel Illumination) >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test E: The Memory Set Switch Illumination is Inoperative - Edge Only >> Pinpoint Test E: The Memory Set Switch Illumination Is Inoperative

Pinpoint Test E: The Memory Set Switch Illumination Is Inoperative

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. E1 CHECK OPERATION OF THE SET SWITCH 
    • Verify the operation of the memory set switch.
    • Does the set switch work and the drivers seat move to a set position? 
    1. YES  : Go to  E2 .
    2. NO  : REFER to SEATING to diagnose the memory seats.
  2. E2 CHECK CIRCUIT CPS55 (YE) FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: Set Switch C503
    • Key in ON position.
      • Fig 1: Measuring Voltage Between SET Switch C503-8, Circuit CPS55 (YE), Harness Side & Ground
      GF0032209Courtesy of FORD MOTOR CO.
    • Measure the voltage between the set switch C503-8, circuit CPS55 (YE), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : INSTALL a new set switch. REFER to SEATING . TEST the system for normal operation.
    2. NO  : Go to  E3.
  3. E3 CHECK CIRCUIT CPS55 (YE) FOR AN OPEN OR SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Drivers Seat Module (DSM) C3299c
      • Fig 2: Measuring Resistance Between SET Switch C503-8 & DSM C3299C-8, Circuit CPS55 (YE) Harness Side
      GF0030777Courtesy of FORD MOTOR CO.
    • Measure the resistance between the set switch C503-8, and the DSM C3299c-8, circuit CPS55 (YE) harness side; and between the set switch C503-8, circuit CPS55 (YE), harness side and ground.
    • Is the resistance from C503-8 to C3299c-8 less than 5 ohms; and the resistance from C503-8 to ground greater than 10,000 ohms? 
    1. YES  : INSTALL a new DSM. REFER to SEATING . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST for normal operation.
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