Toyota Sienna Service Manual: Precaution
1. PRECAUTION OF HEADLIGHT BULB REPLACEMENT
- When any defects such as deformation, crack, dent, chipping, etc. are identified on the discharge headlight (especially, on the light control ECU), replace it with a new one.
- Even if the operation seems to be normal, the failsafe function may be defective.
- Be careful not to scratch or drop bulbs of the discharge headlight and halogen bulbs (for headlights and fog lights) as they have pressurized gas inside and can be easily broken.
- Touching the HV socket of the discharge headlight with the headlight dimmer switch ON could generate momentary high voltage of 20,000 V and lead to a serious injury.
- Never connect a tester to the high voltage socket of the discharge headlight for measurement, as this leads to a serious injury because of high voltage.
- When performing operation related to the discharge headlight, keep it away from water including rain, turn off the light control switch, and disconnect the battery terminal and the connector of the light control ECU in advance to avoid electric shock.
- When performing operation related to the discharge headlight, start it after assembling is completed and never turn the lights on without a bulb installed.
- Do not turn the discharge headlight on using another power source except vehicle's.
Lighting system
...
Parts location
...
Other materials:
Inspection
1. Inspect no. 3 Intake air control valve
assembly
(A) inspect actuator operation.
(1) With 26.7 Kpa (200 mm hg, 7.9 In. Hg) of
vacuum applied to the actuator, check that the
actuator rod moves.
(2) One minute after applying the vacuum, check
that the actuator rod does not return.
...
Transmission Range Sensor Circuit Malfunction
(PRNDL Input)
DESCRIPTION
The park/neutral position switch detects the shift lever position and sends
signals to the ECM.
MONITOR DESCRIPTION
These DTCs indicate a problem with the park/neutral position switch and the
wire harness in the park/
neutral position switch circuit.
The park/neutral po ...
TS and CG Terminal Circuit
DESCRIPTION
In the sensor check mode, a malfunction of the speed sensor that cannot be
detected when the vehicle is
stopped is detected while driving.
Transition to the sensor check mode can be performed by connecting terminals TS
and CG of the DLC3
and turning the ignition switch from off ...