Section 34 (Starting System (2TR-FE)): Starter: Inspection

WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STARTER ARMATURE ASSEMBLY
1. Check the resistance.
  1. Using an ohmmeter, check the resistance between the segments of the commutator.
    Standard: 1Ω or lower
    
    If the result is not as specified, replace the starter armature.
    
    Fig 1: Checking Resistance Between Segments Of Commutator Using Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the resistance.
  1. Using an ohmmeter, check the resistance between the commutator and armature coil core.
    Standard: 10 kΩ or higher
    
    If the result is not as specified, replace the starter armature.
    
    Fig 2: Checking Resistance Between Commutator & Armature Coil Core Using Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check the commutator surface for dirt and burn. If the surface is dirty or burnt, smooth the surface with 400- grit sandpaper or a lathe.
4. Check the commutator diameter.
  1. Using vernier calipers, measure the commutator diameter.
    Standard diameter: 35.0 mm (1.378 in.)
    
    Minimum diameter: 34.0 mm (1.339 in.)
    
    If the diameter is less than the minimum, replace the armature.
    
    Fig 3: Measuring Commutator Diameter Using Vernier Calipers
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Check the undercut depth.
  1. Check that the undercut portion between the segments is free of foreign objects and measure its depth.
    Standard undercut depth: 0.7 mm (0.028 in.)
    
    Minimum undercut depth: 0.2 mm (0.008 in.)
    
    If the undercut depth is less than the minimum, correct it with a hacksaw blade.
    
    Fig 4: Checking Undercut Depth
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT STARTER YOKE ASSEMBLY
1. Check the resistance.
  1. Using an ohmmeter, check the resistance between the lead wire and brushes.
    Standard: 1 Ω or lower
    
    If the result is not as specified, replace the starter yoke.
    
    Fig 5: Checking Resistance Between Lead Wire & Brushes Using Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the resistance.
  1. Using an ohmmeter, check the resistance between shunt coil terminals (A) and (B).
    Standard: 1.5 to 1.9 Ω at 20°C (68°F)
    
    If the result is not as specified, replace the starter yoke.
    
    Fig 6: Checking Resistance Between Shunt Coil Terminals (A) & (B) Using Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT BRUSH
1. Check the brush length.
  1. Using vernier calipers, measure the brush length
    Standard length: 15.0 mm (0.591 in.)
    
    Minimum length: 9.0 mm (0.354 in.)
    
    If the length is less than the minimum, replace the brush holder and starter yoke.
    
    Fig 7: Measuring Brush Length Using Vernier Calipers
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT STARTER BRUSH HOLDER ASSEMBLY
1. Check the resistance.
  1. Using an ohmmeter, measure the resistance between the positive (+) and negative (-) brush holders.
    Standard: 10 kΩ or higher
    
    If the result is not as specified, repair or replace the brush holder assy.
    
    Fig 8: Measuring Resistance Between Positive (+) & Negative (-) Brush Holders Using Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the brush spring load.
  1. Check the pull scale reading as soon as the brush spring is separated from the brush.
    Standard spring load: 21.5 to 27.5 N (2.2 to 2.8 kgf, 4.8 to 6.2 lbf)
    
    Minimum spring load: 12.7 N (1.3 kgf, 2.9 lbf)
    
    If the spring load is less than the minimum, replace the brush holder assy.
    
    Fig 9: Checking Brush Spring Load
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT STARTER CLUTCH SUB-ASSEMBLY
1. Check the operation.
  1. Turn the clutch pinion gear clockwise and check that it turns freely. Try to rotate the clutch pinion gear counterclockwise and check that it locks.
    If necessary, replace the starter clutch.
    
    Fig 10: Turning Clutch Pinion Gear Clockwise
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT MAGNET STARTER SWITCH ASSEMBLY
1. Check the resistance.
  1. Using an ohmmeter, measure the resistance between terminals 50 and C.
    Standard: 1Ω or lower
    
    If the result is not as specified, replace the magnet switch
    
    Fig 11: Measuring Resistance Between Terminals 50 & C Using Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the resistance.
  1. Using an ohmmeter, measure the resistance between terminal 50 and the switch body.
    Standard: 2.0Ω or lower
    
    If the result is not as specified, replace the magnet switch.
    
    Fig 12: Measuring Resistance Between Terminal 50 & Switch Body Using Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002