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Pinpoint Test B: Check The PSCM Power And Ground Circuit(S)

NOTE: Refer to the appropriate Wiring Diagrams , for schematic and connector information.
  1. B1: CHECK THE PSCM C1CS05A POWER CIRCUIT FOR VOLTAGE 
    1. Disconnect PSCM electrical connector C1CS05A.
      G15317804Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    2. Measure the voltage between the PSCM  electrical connector C1CS05A pin 1 (BU), harness side and ground.

      Is the voltage above 12 volts?

      Yes:  GO to  B3.

      No:  Check fuse link 6A (60 Amps). If the fuse is damaged, install a new fuse. If the fuse is OK, GO to  B2.

  2. B2: CHECK FOR CONTINUITY BETWEEN PSCM C1CS05A AND AUXILIARY JUNCTION BOX ELECTRICAL CONNECTOR C1BF01AN 
    1. Disconnect Auxiliary junction box electrical connector C1BF01AN.
      G15317805Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    2. Measure the resistance between the PSCM  electrical connector C1CS05A pin 1 (BU), harness side and the auxiliary junction box electrical connector C1BF01AN pin 1 (BU), harness side.

      Is the resistance less than 1 ohms?

      Yes:  GO to  B3.

      No:  REPAIR the circuit. TEST the system for normal operation.

  3. B3: CHECK THE PSCM C1CS05A GROUND CIRCUIT 
    G15317806Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    1. Measure the resistance between the PSCM  electrical connector C1CS05A pin 2 (BK), harness side and ground.

      Is the resistance less than 1 ohms?

      Yes:  GO to  B4.

      No:  REPAIR the circuit. TEST the system for normal operation.

  4. B4: CHECK THE PSCM C1CS05A IGNITION CIRCUIT FOR VOLTAGE 
    1. Turn the ignition ON.
      G15317807Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    2. Measure the voltage between the PSCM  electrical connector C1CS05A pin 3 (VT-WH), harness side and ground.

      Is the voltage above 12 volts?

      Yes:  GO to  B5.

      No:  Check the BCM  . Refer to: COMMUNICATIONS NETWORK

  5. B5: CHECK THE PSCM C1CS05B POWER CIRCUIT FOR VOLTAGE 
    1. Connect PSCM electrical connector C1CS05A.
    2. Disconnect PSCM electrical connector C1CS05B.
      G15317808Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    3. Measure the voltage between the PSCM  electrical connector C1CS05B pin 2 (VT-RD), harness side and ground.

      Is the voltage above 12 volts?

      Yes:  GO to  B7.

      No:  Check fuse link 7A (60 Amps). If the fuse is damaged, install a new fuse. If the fuse is OK, GO to  B6.

  6. B6: CHECK FOR CONTINUITY BETWEEN PSCM C1CS05A AND AUXILIARY JUNCTION BOX ELECTRICAL CONNECTOR C1BF01AN 
    G15317809Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    1. Measure the resistance between the PSCM  electrical connector C1CS05B pin 2 (VT-RD), harness side and the auxiliary junction box electrical connector C1BF01AN pin 2 (RD), harness side.

      Is the resistance less than 1 ohms?

      Yes:  GO to  B7.

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

  7. B7: CHECK THE PSCM C1CS05B GROUND CIRCUIT 
    G15317810Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    1. Measure the resistance between the PSCM  electrical connector C1CS05A pin 2 (BK), harness side and ground.

      Is the resistance less than 1 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.

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