Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2006SIENNA AWD V6-3.3L (3MZ-FE)REPAIR AND DIAGNOSISSTARTING AND CHARGINGSTARTING SYSTEMTESTING AND INSPECTION
2006 Toyota Sienna AWD V6-3.3L (3MZ-FE)
Starting System: Testing and Inspection
2006 Toyota Sienna AWD V6-3.3L (3MZ-FE)SECTION Testing and Inspection
INSPECTION
1. INSPECT STARTER ASSEMBLY
NOTE: These tests must be performed within 3 to 5 seconds to avoid burning out the coil.
a. Do pull-in test
1. Disconnect the field coil lead from terminal C.
2. Connect the battery to the magnetic switch as shown in the illustration. Check that the clutch pinion gear is extended.
If the clutch pinion gear does not move, replace the magnetic switch.
b. Do hold-in test
1. Disconnect the negative (-) lead from the terminal C with the above condition (a) is being maintained. Check that the pinion gear remains extended.
If the clutch pinion gear returns inward, replace the magnetic switch.
c. Inspect clutch pinion gear return
1. Disconnect the negative (-) lead from the switch body. Check that the clutch pinion gear returns.
If the clutch pinion gear does not return, replace the magnetic switch.
d. Do no-load performance test
1. Connect the field coil lead wire to terminal C. Make sure that the lead is not grounded.
2. Clamp the starter in a vise.
3. Connect the battery and an ammeter to the starter as shown in the illustration.
4. Check that the starter rotates smoothly and steadily with the clutch pinion gear extended. Check that the ammeter reads the specified current.
Specified current: 90 A or less at 11.5 V
2. INSPECT STARTER RELAY ASSEMBLY
a. Continuity inspection.
1. Using an ohmmeter, check for continuity between each terminal.
1. INSPECT STARTER ASSEMBLY
NOTE: These tests must be performed within 3 to 5 seconds to avoid burning out the coil.
a. Do pull-in test
1. Disconnect the field coil lead from terminal C.
2. Connect the battery to the magnetic switch as shown in the illustration. Check that the clutch pinion gear is extended.
If the clutch pinion gear does not move, replace the magnetic switch.
b. Do hold-in test
1. Disconnect the negative (-) lead from the terminal C with the above condition (a) is being maintained. Check that the pinion gear remains extended.
If the clutch pinion gear returns inward, replace the magnetic switch.
c. Inspect clutch pinion gear return
1. Disconnect the negative (-) lead from the switch body. Check that the clutch pinion gear returns.
If the clutch pinion gear does not return, replace the magnetic switch.
d. Do no-load performance test
1. Connect the field coil lead wire to terminal C. Make sure that the lead is not grounded.
2. Clamp the starter in a vise.
3. Connect the battery and an ammeter to the starter as shown in the illustration.
4. Check that the starter rotates smoothly and steadily with the clutch pinion gear extended. Check that the ammeter reads the specified current.
Specified current: 90 A or less at 11.5 V
2. INSPECT STARTER RELAY ASSEMBLY
a. Continuity inspection.
1. Using an ohmmeter, check for continuity between each terminal.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.