Toyota Sienna Service Manual: Receiver Error
DTC C2176/76 Receiver Error
DESCRIPTION
The signals are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tire pressure warning ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
- When replacing the tire pressure warning ECU, read the IDs stored in the ECU using the intelligent tester and write them down before removal.
- It is necessary to perform initialization (See page TW-23) after registration (See page TW-20) of the transmitter IDs into the tire pressure warning ECU after the ECU has been replaced.
1 CHECK HARNESS AND CONNECTOR (ECU - RECEIVER)
(a) Disconnect the T15 ECU connector.
(b) Disconnect the T16 receiver connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance 
2 CHECK TIRE PRESSURE WARNING ECU
(a) Reconnect the T15 ECU connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage
REPLACE TIRE PRESSURE WARNING ANTENNA AND RECEIVER (See page TW-81)
Transmitter ID not Registered
DTC C2171/71 Transmitter ID not Registered
DESCRIPTION
The IDs of each tire pressure warning valve and transmitters are registered
to the tire pressure warning
ECU.
When the IDs have never bee ...
Initialization not Completed
DTC C2177/77 Initialization not Completed
DESCRIPTION
Initialization is necessary after replacing any of the ECUs, tires with
different tire pressure, or tire pressure
warning valve and transmitt ...
Other materials:
Inspection
1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
Resistance inspection
Using an ohmmeter, measure the resistance
between the terminals.
Resistance:
6.9 to 7.9 Ω at 20C (68F)
If necessary, replace the camshaft timing oil
control valve assembly.
&nbs ...
Checking tires
Check if the treadwear indicators are showing on the tires. Also check
the tires for uneven wear, such as excessive wear on one side of the
tread. Check the spare tire condition and pressure if not rotated.
New tread
Worn tread
Treadwear indicator
The location of treadwear indicator ...
Shift lock system
On-vehicle inspection
1. CHECK SHIFT LOCK OPERATION
(a) Move the shift lever to the P position.
(b) Turn the ignition switch to the LOCK position.
(c) Check that the shift lever cannot be moved to any
position other than P.
(d) Turn the ignition switch to the on position, depress
the br ...
