Tacoma 4WD V6-4.0L (1GR-FE) (2006)
Alternator: Testing and Inspection
Generator (For Denso Made)
INSPECTION
1. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY
a. Using vernier calipers, measure the exposed brush length.
Standard exposed brush length: 10.5 mm (0.413 in.)
Minimum exposed brush length: 4.5 mm (0.177 in.)
If the exposed brush length is less than the minimum, replace the brush holder.
2. INSPECT GENERATOR ROTOR ASSEMBLY
a. Check the rotor for an open circuit.
1. Using an ohmmeter, measure the resistance between the slip rings.
Standard: 2.3 to 2.7 Ohms at 20 degrees C (68 degrees F)
If the result is not as specified, replace the rotor.
b. Check the rotor for ground.
1. Using an ohmmeter, measure the resistance between the slip ring and rotor.
Standard: 10 kOhms or higher
If the result is not as specified, replace the rotor.