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Pinpoint Test D: Check The (Chassis) Signal/Circuit(S) To The PSCM

  1. D1: CHECK THE (CHASSIS) H CIRCUIT FOR VOLTAGE 
    1. Disconnect PSCM electrical connector C1CS05B.
      G15317818Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    2. With the ignition OFF, measure the voltage between the PSCM  electrical connector C1CS05B pin 4 (BU), harness side and ground.
    3. With the ignition ON, measure the voltage between the PSCM  electrical connector C1CS05B pin 4 (BU), harness side and ground.

      Is the voltage 2.5 volts with the ignition OFF and 3.5 volts with the ignition ON?

      Yes:  GO to  D2.

      No:  GO to  D3.

  2. D2: CHECK THE (CHASSIS) L CIRCUIT FOR VOLTAGE 
    G15317819Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    1. With the ignition OFF, measure the voltage between the PSCM  electrical connector C1CS05B pin 6 (BU-GN), harness side and ground.
    2. With the ignition ON, measure the voltage between the PSCM  electrical connector C1CS05B pin 6 (BU-GN), harness side and ground.

      Is the voltage 2.5 volts with the ignition OFF and 1.5 volts with the ignition ON?

      Yes:  Continue with the Action list detailed within the DTC  Index - PSCM  for the DTC  directed to this pinpoint test.

      No:  GO to  D4.

  3. D3: CHECK THE (CHASSIS) H CIRCUIT FOR VOLTAGE CHECK FOR CONTINUITY BETWEEN PSCM C1CS05B AND DADC ELECTRICAL CONNECTOR C2MF20A 
    1. Disconnect DADC electrical connector C2MF20A.
      G15317820Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    2. Measure the resistance between the PSCM  electrical connector C1CS05B pin 4 (BU), harness side and DADC  electrical connector C2MF20A pin 3 (BU), harness side.

      Is the resistance less than 5 ohms?

      Yes:  Continue with the Action list detailed within the DTC  Index - PSCM  for the DTC  directed to this pinpoint test.

      No:  REPAIR the circuit. TEST the system for normal operation. If the wiring harness is OK, Refer to: COMMUNICATIONS NETWORK

  4. D4: CHECK THE (CHASSIS) L CIRCUIT FOR VOLTAGE CHECK FOR CONTINUITY BETWEEN PSCM C1CS05B AND DADC ELECTRICAL CONNECTOR C2MF20A 
    1. Disconnect DADC electrical connector C2MF20A.
      G15317821Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    2. Measure the resistance between the PSCM  electrical connector C1CS05B pin 6 (BU-GN), harness side and DADC  electrical connector C2MF20A pin 4 (BU-GN), harness side.

      Is the resistance less than 5 ohms?

      Yes:  Continue with the Action list detailed within the DTC  Index - PSCM  for the DTC  directed to this pinpoint test.

      No:  REPAIR the circuit. TEST the system for normal operation. If the wiring harness is OK, Refer to: COMMUNICATIONS NETWORK

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