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:
Cruise Control Switch Circuit
DESCRIPTION
The cruise control main switch operates 8 functions: SET, - (COAST),
TAP-DOWN, RES (RESUME), +
(ACCEL), TAP-UP, CANCEL, and MODE. The SET, TAP-DOWN, and - (COAST) functions,
and the RES
(RESUME), TAP-UP, and + (ACCEL) functions are operated with the same switch. The
cruise contr ...
Speedometer Malfunction
DESCRIPTION
Factors that affect the indicated vehicle speed include tire size, tire
inflation, and tire wear. The speed indicated on the speedometer has an
allowable margin of error. This can be tested using a speedometer tester
(calibrated chassis dynamometer). For details about testing and ...
GCWR, TWR and Unbraked TWR
Confirm that the gross trailer weight, gross combination weight, gross
vehicle weight, gross axle weight and tongue weight are all within the
limits.
GCWR*
2WD models: 8900 lb. (4037 kg)
AWD models: 8990 lb. (4078 kg)
TWR*
3500 lb. (1588 kg)
Unbraked TWR*
1000 lb. (454 kg)
*: These models ...
