LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> LS 460 >> Repair and Diagnosis >> External Pages >> Different car >> Section 634 (Starting System) >> Basic Inspection >> Diagnosis And Repair Workflow >> Work Flow >> Detailed Flow
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Detailed Flow

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: To ensure a complete and thorough diagnosis, the battery, starter motor and generator test segments must be done as a set from start to finish.
  1. DIAGNOSIS WITH MULTITASKING BATTERY DIAGNOSTIC STATION

    2. Perform the starting system test with multitasking battery diagnostic station. For details and operating instructions, refer to diagnostic station instruction manual.

    Test result 

    CRANKING NORMAL: GO TO 2

    LOW VOLTAGE: GO TO 5

    CHARGE BATTERY: Perform the slow battery charging procedure. (Initial rate of charge is 10 A for 12 hours.) Perform battery test again. Refer to diagnostic station instruction manual.

    REPLACE BATTERY: Before replacing battery, clean the battery cable clamps and battery posts. Perform battery test again. Refer to diagnostic station instruction manual. If second test result is "REPLACE BATTERY", then do so. Perform battery test again to confirm repair.

  2. CRANKING CHECK

    3. Check that the starter motor operates properly.

    Does the engine crank normally? 

    YES: GO TO 3

    NO: GO TO 4

  3. ENGINE START CHECK

    4. Check that the engine starts.

    Does the engine start? 

    YES: Starter motor is OK. Inspection end.

    NO: Perform further diagnosis of engine mechanical or engine control system. Refer to ENGINE MECHANICAL and ENGINE CONTROL SYSTEM articles. Once resolved, perform battery test again.

  4. STARTER MOTOR ACTIVATION

    5. Check that the starter motor operates.

    Does the starter motor turn? 

    YES: Check ring gear and starter motor drive pinion. Once resolved, perform battery test again.

    NO: GO TO 7

  5. COMPARISON BETWEEN ENGINE COOLANT AND CRANKING VOLTAGE

    Compare the engine coolant temperature and verify the cranking voltage is within specification.

    Minimum Specification of Cranking Voltage Referencing Coolant Temperature

    VOLTAGE SPECIFICATION

    Engine coolant temperature [°C (°F)] Voltage [V]
    -30 to -20 (-22 to -4) 8.6
    -19 to -10 (-2 to 14) 9.1
    -9 to 0 (16 to 32) 9.5
    More than 1 (More than 34) 9.9

    Is the voltage less than the specified value? 

    YES: GO TO 7

    NO: GO TO 6

  6. STARTER OPERATION

    Check the starter operation.

    Does the starter motor turn smoothly? 

    YES: Starter motor is OK. Inspection end.

    NO: GO TO 7

  7. "B" TERMINAL CIRCUIT INSPECTION

    Check "B" terminal circuit. Refer to "DIAGNOSIS PROCEDURE ".

    Is "B" terminal circuit normal? 

    YES: GO TO 8

    NO: Repair as needed.

  8. "S" CONNECTOR CIRCUIT INSPECTION

    Check "S" connector circuit. Refer to "DIAGNOSIS PROCEDURE ".

    Is "S" connector circuit normal? 

    YES: GO TO 9

    NO: Repair as needed.

  9. ENGINE ROTATION STATUS

    Check that the engine can be rotated by hand.

    Does the engine turn freely by hand? 

    YES: Replace starter motor. Refer to "REMOVAL AND INSTALLATION ".

    NO: Perform further diagnosis of engine mechanical or powertrain mechanism. Refer to ENGINE MECHANICAL, AUTOMATIC TRANSMISSION (RE0F09B) or CLUTCH SYSTEMS articles. Once resolved, perform battery test again. Refer to diagnostic station instruction manual.

scientia non olet · About LEMON Manuals