Tundra 4WD V8-4.6L (1UR-FE) (2010)
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Alternator: Testing and Inspection
1UR-FE CHARGING: GENERATOR: INSPECTION
1. INSPECT GENERATOR ROTOR ASSEMBLY
(a) Check the rotor for an open circuit.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(2) If the result is not as specified, replace the generator rotor assembly.
(b) Check if the rotor is grounded.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(2) If the result is not as specified, replace the generator rotor assembly.
(c) Check that the slip rings are not rough or scored.
If rough or scored, replace the generator rotor assembly.
(d) Using a vernier caliper, measure the slip ring diameter.
