Toyota Sienna Service Manual: Problem symptoms table
If there are no DTCs output but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
NOTICE: When replacing the brake actuator assembly, sensor, etc., turn the ignition switch off.
HINT: Inspect the fuse and relay before investigating the suspected areas as shown in the table below. Inspect each malfunction circuit in numerical order for the corresponding symptom.
Anti-lock brake system:
Terminals of ecu
Test mode procedure
1. SPEED SENSOR SIGNAL CHECK (WHEN USING SST CHECK WIRE):
HINT:
If the ignition switch is turned from the ON to the ACC
or LOCK position during Test Mode, the DTCs of the
signal check functio ...
Diagnosis system
1. DESCRIPTION
(a) Release the parking brake pedal.
(b) Check the warning lights.
When ignition switch is turned ON, check that the
ABS warning light and brake warning light come on
for 3 ...
Other materials:
Power back door opener / closer switch
INSPECTION
1. INSPECT SATELLITE SWITCH
Inspect the resistance of the back door switch.
Resistance
If the result is not as specified, replace the switch.
Apply battery voltage and check whether the switch
illuminates.
Standard
HINT:
Whether the switch illuminates or not wi ...
Removal
1. REMOVE CENTER REAR SEAT LAP TYPE BELT
ASSEMBLY (for 8-Passenger)
HINT:
Refer to the instructions for disassembly of the rear No. 1
seat assembly (for center seat).
Remove the bolt and center seat lap type belt
assembly.
2. REMOVE CENTER REAR NO. 2 SEAT LAP BELT
ASSEMBLY WITH I ...
Reassembly
1. INSTALL LIGHT CONTROL ECU (DISCHARGE HEADLIGHT)
Install a new headlight leveling motor base packing.
Install the headlight leveling motor assembly as
shown in the illustration.
Connect the connector with the claw
Install the light control ECU with the 2 ...
