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Home >> Land Rover >> 2014 >> Range Rover Autobiography >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Starting System - TDV6 3.0L Diesel -- Range Rover/L405) >> Starting System - TDV6 3.0L Diesel >> Starting System (Diagnosis And Testing) >> Diagnosis And Testing >> DTC Index >> Pinpoint Test A: Starter Motor Prior Approval Test Procedure

Pinpoint Test A: Starter Motor Prior Approval Test Procedure

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  1. A1: PRE CHECKS (MANUFACTURER APPROVED BATTERY TESTER) 
    1. Please refer to BATTERY (DIAGNOSIS AND TESTING) and carry out the diagnosis and testing using the manufacturer approved test equipment. Record the information using the battery care report sheet

    Have the battery care routines using the manufacturer approved test equipment been carried out and has the information using the battery care report sheet been recorded?

    • Yes  : Proceed to next step
    • No  : Carry out the battery care routines using the manufacturer approved test equipment. Record the information using the battery care report sheet

      Proceed to next step

  2. A2: PRE CHECKS (GENERAL WEATHER CONDITIONS) 
    NOTE: The results of this test step may be required by dealer technical support
    1. Confirm with the customer and record the weather conditions and ambient temperature (as accurately as possible) at the time of failure
    2. Confirm and record the weather conditions and ambient temperature (as accurately as possible) at the time of test

    Have the weather conditions and ambient temperature been recorded

    • Yes  : Proceed to next step
    • No  : Record the weather conditions and ambient temperature

      Proceed to next step

  3. A3: CHECK FOR RELATED STARTER MOTOR, IMMOBILIZER DIAGNOSTIC TROUBLE CODES 
    1. Using the manufacturer approved diagnostic system, check for starter motor or immobilizer, related DTCs and refer to the relevant DTC index

    Are starter motor or immobilizer, related DTCs logged?

    • Yes  : Carry out any repair action as required Clear the DTC and retest
    • No  : Proceed to next step
  4. A4: CHECK INSTALLATION OF STARTER MOTOR BREATHER TUBE 
    1. If a vent-cap breather tube is installed, check this is routed correctly and that the cap is secure. If the cap is insecure or missing, or if there is damage to the breather tube, then replace the missing/damaged components as required. If a shepherd's-crook type breather tube is installed, replace the breather tube with a vent-cap breather tube
    G11698183

    Is the starter motor breather tube installed and routed correctly?

    • Yes  : Proceed to next step
    • No  : Install the breather tube and route it correctly Attempt 10 starts to the vehicle. If the vehicle does NOT  start during any of the 10 attempts. Install new starter motorIf the vehicle DOES  start during all of the 10 attempts Proceed to next step
  5. A5: STARTER MOTOR CHECKS 

    This test will require the technician to listen for audible result, high surrounding noise may hinder the outcome

    1. Set the ignition ON
    2. Depress the brake pedal
    3. Depress the start button

    Was there an audible click when the start button was pressed and did the vehicle start?

    (Audible click will not be heard if the vehicle starts)

    • Yes  : Proceed to next step
    • No  : Set the ignition OFF. Repeat this starter motor check a further 10 times. Record the result for number of none click tests. If there was an audible click when the start button was pressed during the 10 test cycle. Proceed to next step.
  6. A6: CHECK CONNECTIONS ON THE STARTER MOTOR 
    1. Please refer to SPECIFICATIONS 
      G11607878
    2. Gain access to the starter motor
    3. Refer to the appropriate system wiring diagram and check the battery power supply and terminal to the starter motor (battery positive cable nut T30 permanent feed B1)
    4. Refer to the appropriate system wiring diagram and check the operating supply and terminal to the starter motor (switch lead to the starter motor solenoid nut T50)
    5. Refer to the appropriate system wiring diagram and check the power feed stud on the starter motor (T45 terminal)
    6. Refer to the appropriate system wiring diagram and inspect connections for signs of becoming loose, water ingress, and terminals/stud for damage and/or corrosion

    Are terminal/stud connections to starter motor, loose, damaged or corroded?

    • Yes  : Rectify as required Re-check the system is operating correctly Return vehicle to the customer
    • No  : Proceed to next step
  7. A7: VOLTAGE DROP GROUND CIRCUIT 

    During this test be aware of hot or moving parts. Failure to follow this instruction may result in personal injury

    You will require assistance during this test

    1. Connect the multimeter between the battery negative terminal and the starter motor ground (where bolted to the bell housing)
    2. Set the multimeter to read DC voltage. Set the ignition ON. Depress the brake pedal. Depress the start button and record the reading

    Is reading equal to or below 0.6 volts?

    • Yes  : Proceed to next step
    • No  : Refer to the appropriate system wiring diagram and check ground circuit between battery negative terminal and starter motor for corrosion and high resistance Rectify as required Re-check the system is operating correctly Return vehicle to the customer
  8. A8: VOLTAGE DROP POWER CIRCUIT 

    During this test be aware of hot or moving parts. Failure to follow this instruction may result in personal injury

    You will require assistance during this test

    1. Connect the multimeter between the battery positive terminal and the power feed stud on the starter motor (T45 terminal)
    2. Set the multimeter to read DC voltage. Set the ignition ON. Depress the brake pedal. Depress the start button and record the reading

    Is reading equal to or below 0.8 volts?

    • Yes  : Proceed to next step
    • No  : Refer to the appropriate system wiring diagram and check power circuit between battery positive terminal and the power feed stud on the starter motor (T45 terminal) including mega fuses, for corrosion and high resistance Rectify as required Re-check the system is operating correctly Return vehicle to the customer
  9. A9: VOLTAGE AT STARTER MOTOR (T50) 

    During this test be aware of hot or moving parts. Failure to follow this instruction may result in personal injury

    You will require assistance during this test

    1. Check the operating supply voltage to the starter motor (T50)
    2. Connect the multimeter between the starter motor (T50) terminal and ground
    3. Set the multimeter to read DC voltage. Set the ignition ON. Depress the brake pedal. Depress the start button and record the reading

    Is the reading between 9 & 12 volts during cranking?

    • Yes  : Proceed to next step
    • No  : Refer to the appropriate system wiring diagram and check starter relay circuit for open circuit, high resistance Rectify as required Re-check the system is operating correctly Return vehicle to the customer
  10. A10: VOLTAGE AT STARTER MOTOR SOLENOID (T45) 

    During this test be aware of hot or moving parts. Failure to follow this instruction may result in personal injury

    You will require assistance during this test

    1. Check the operating supply voltage to the starter motor (T45)
    2. Connect the multimeter between the starter motor (T45) terminal and ground
    3. Set the multimeter to read DC voltage. Set the ignition ON. Depress the brake pedal. Depress the start button and record the reading

    Is the reading between 6 & 9 volts during cranking?

    • Yes  : Proceed to next step
    • No  : Check and install new starter motor
  11. A11: STARTER MOTOR VISUAL INSPECTION 

    During this test isolate the vehicle battery. Failure to follow this instruction may result in personal injury

    1. Remove the starter motor
    2. Visually inspect the starter motor ring gear for failure
    3. Visually inspect the flywheel ring gear for failure

    Was there evidence of failure to the starter motor of flywheel ring gear