LEMON Manuals: Even more car manuals for everyone
Home >> Land Rover >> 2021 >> Range Rover SVAutobiography Dynamic Blk. >> Repair and Diagnosis >> Steering >> Manual Steering >> Steering System - General Information -- Range Rover/L405 >> Steering System - General Information >> Diagnosis And Testing >> Steering System (G2894392) >> Pinpoint Test - Electrical >> Pinpoint Test B: Check The Power And Ground Circuit(S)

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

NOTE: Refer to appropriate Wiring Diagrams article , for schematic and connector information.
  1. B1: CHECK THE C1CS05A POWER CIRCUIT FOR VOLTAGE 
    1. Disconnect PSCM electrical connector C1CS05A.
    2. Measure the voltage between the PSCM  electrical connector C1CS05A pin 1 (RD), harness side and ground.
      G14048943Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

      Is the voltage above 12 volts?

      Yes:  GO to  B3.

      No:  Check fuse link 3A (150 Amps). If the fuse is damaged, install a new fuse. If the fuse is OK, GO to  B2.

  2. B2: CHECK FOR CONTINUITY BETWEEN C1CS05A AND AUXILIARY JUNCTION BOX ELECTRICAL CONNECTOR C1BF01C 
    1. Disconnect Auxiliary junction box electrical connector C1BF01C.
      G14048944Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
      NOTE: Make sure to zero out the resistance of multimeter test leads before carrying out any other resistance checks.
    2. Measure the resistance between the PSCM  electrical connector C1CS05A pin 1 (RD), harness side and the auxiliary junction box electrical connector C1BF01C pin 1 (RD), harness side.

      Is the resistance less than 1 ohm?

      Yes:

      GO to  B3.

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

  3. B3: CHECK THE C1CS05A GROUND CIRCUIT 
    G14048945Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    NOTE: Make sure to zero out the resistance of multimeter test leads before carrying out any other resistance checks.
    1. Measure the resistance between the PSCM  electrical connector C1CS05A pin 2 (BK), harness side and body ground.

      Is the resistance less than 1 ohm?

      Yes:  GO to  B4.

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

  4. B4: CHECK THE C1CS05B IGNITION CIRCUIT FOR VOLTAGE 
    1. Connect PSCM electrical connector C1CS05A.
    2. Disconnect PSCM electrical connector C1CS05B.
    3. Turn the ignition ON.
    4. Measure the voltage between the PSCM  electrical connector C1CS05B pin 6 (VT-WH), harness side and ground.
      G14048946Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

      Is the voltage above 12 volts?

      Yes:  If directed to this pinpoint test from the DTC  Index - PSCM  , then continue with the Action list Step(s).

      No:  GO to  B5.

  5. B5: CHECK FOR CONTINUITY BETWEEN C1CS05B AND ELECTRICAL CONNECTOR C2BP01H 
    1. Turn the ignition OFF.
    2. Disconnect BCM electrical connector C2BP01H.
      G14048947Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
      NOTE: Make sure to zero out the resistance of multimeter test leads before carrying out any other resistance checks.
    3. Measure the resistance between the PSCM  electrical connector C1CS05B pin 6 (VT-WH), harness side and the BCM  electrical connector C2BP01H pin 32 (WH-VT), harness side.

      Is the resistance less than 5 ohms?

      Yes:  If directed to this pinpoint test from the DTC  Index - PSCM  , then continue with the Action list Step(s). If directed to this pinpoint test from the Symptom Chart in this procedure. Refer to: COMMUNICATIONS NETWORK for further diagnosis.

      No:  Check the BCM  . REFER to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: BODY CONTROL MODULE (BCM) .

scientia non olet · About LEMON Manuals