Toyota Sienna Service Manual: TC and CG Terminal Circuit
DESCRIPTION
DTC output mode is set by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are indicated by blinks of the tire pressure warning light.
WIRING DIAGRAM
HINT: When each warning light blinks continuously, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in an ECU connected to this circuit may have occurred.
INSPECTION PROCEDURE
NOTICE: When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the intelligent tester and write them down before removal.
It is necessary to register an ID code after replacing the tire pressure warning valve and transmitter and/or the tire pressure warning ECU (See page TW-20).
1 CHECK HARNESS AND CONNECTOR (DLC3 - TIRE PRESSURE WARNING ECU)
(a) Disconnect the T15 ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance 
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See page TW-28)
ECU Power Source Circuit
DESCRIPTION
This is the power source for the tire pressure warning ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When replacing the tire pressure warning ECU, read the transmitter IDs
st ...
Tire pressure warning receiver (w/ antenna)
Components
...
Other materials:
Front wiper rubber
COMPONENTS
REMOVAL
1. REMOVE FRONT WIPER BLADE
Remove the front wiper blade from the front wiper
arm LH.
NOTICE:
Do not fold down the front wiper arm with the
front wiper blade being removed from it.
2. REMOVE FRONT WIPER RUBBER
Remove the front wiper rubber from th ...
Data list / active test
1. READ DATA LIST
HINT:
Using the intelligent tester to read the Data List allows
the values or states of switches, sensors, 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 disco ...
DSP Error/ DSP Error
DTC 62-78 DSP Error
DTC 63-78 DSP Error
DESCRIPTION
INSPECTION PROCEDURE
HINT:
After the inspection is completed, clear the DTCs.
NOTICE:
These codes may be output even if there is no malfunction.
If these codes are output frequently, replace the radio receiver.
1 CLEA ...
