Toyota Sienna Service Manual: Disassembly
1. REMOVE STEERING INTERMEDIATE SHAFT ASSEMBLY
(a) Align the matchmarks on the steering intermediate shaft assembly and main shaft.
(b) Remove the bolt and steering intermediate shaft assembly.
2. REMOVE KEY CYLINDER LIGHT ASSEMBLY (w/o Engine Immobiliser System)
3. REMOVE TRANSPONDER KEY AMPLIFIER (w/ Engine Immobiliser System)
(a) Widen the claw hanging onto the upper bracket by approx. 1.0 mm (0.039 in.) using a screwdriver.
(b) Pull the transponder key amplifier toward the rear of the vehicle with the claw open.
NOTICE: Take care not to use excessive force to prevent the case from being damaged.
4. REMOVE STEERING COLUMN BRACKET ASSEMBLY UPPER
(a) Using a centering punch, mark the center of the 2 tapered-head bolts.
(b) Using a 3 to 4 mm (0.12 to 0.16 in.) drill, drill a hole into the heads of the 2 bolts.
(c) Using a screw extractor, remove the 2 bolts and steering column upper w/ switch bracket assembly.
5. REMOVE IGNITION SWITCH LOCK CYLINDER ASSEMBLY
(a) Place the ignition switch lock cylinder assembly in the ACC position.
(b) Push down the stop pin with a screwdriver, and pull out the cylinder assembly.
6. REMOVE UN-LOCK WARNING SWITCH ASSEMBLY
(a) Disconnect the un-lock warning switch assembly connector from the ignition or starter switch assembly.
(b) Remove the un-lock warning switch assembly by pushing up the center part and releasing the 2 claws.
(c) Disengage the secondary locking device.
(d) Using a screwdriver, disengage the locking lug of terminals 1 and 2, and pull the terminals out from the rear side of the un-lock warning switch assembly.
7. REMOVE KEY INTER LOCK SOLENOID
(a) Remove the 2 screws and solenoid from the steering column bracket assembly.
8. REMOVE IGNITION OR STARTER SWITCH ASSEMBLY
(a) Remove the 2 screws and ignition or starter switch assembly from the steering column bracket assembly UPR.
Removal
1. PRECAUTION
HINT:
See page RS-1
2. DISCONNECT BATTERY NEGATIVE TERMINAL
Wait for 90 seconds after disconnecting the battery
terminal to prevent the airbag working.
3. PLACE FRONT WHEELS FACING ...
Reassembly
1. INSTALL IGNITION OR STARTER SWITCH
ASSEMBLY
(a) Install the ignition or starter switch assembly to the
steering column bracket assembly UPR with the 2
screws.
2. INSTALL KEY INTER LOCK SOLENOI ...
Other materials:
Data list / active test
1. DATA LIST
HINT:
Using the intelligent tester to read the DATA LIST allows
the values or states of switches, sensor, actuators and
other items to be read without removing any parts. This
non-intrusive inspection can be very useful because
intermittent conditions or signals may be discovered
...
System normal condition check
1. CHECK NORMAL CONDITION
If the symptom is applicable to any of the following,
it is intended behavior, and not a malfunction.
Symptom
Answer
A longer route than expected is chosen.
Depending on the road conditions, the radio and navigation assembly
m ...
DTC check / clear
1. USING INTELLIGENT TESTER
Hook up the intelligent tester to the DLC3.
Monitor the ECU data by following the prompts on
the tester screen.
HINT:
intelligent tester has "Snapshot" function which
records the monitored data. Please refer to the
intelligent tester op ...
