Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 923

Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 923

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2173/73: Vehicle Speed or Engine Speed Signal Malfunction

C2173/73 - Vehicle Speed or Engine Speed Signal Malfunction

DESCRIPTION

The tire pressure warning ECU receives a vehicle speed signal from the combination meter and an engine speed signal from the ECM. The tire

pressure warning ECU uses these signals to detect DTCs C2121/21 to C2125/25 (No Signal from Transmitter in Main Mode) and DTC C2177/77

(Initialization not Completed).

NOTICE:

When DTCs C2121/21 to C2125/25 are stored in the tire pressure warning ECU, DTC C2173/73 may be stored simultaneously. In

such cases, troubleshoot C2173/73 first, then troubleshoot DTCs C2121/21 to C2125/25 See: C Code Charts/C2121/Tire Pressure

Monitoring (to 12/2010).

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

* When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the Techstream and note

them down before removal.

* It is necessary to perform the initialization See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring

System/Testing and Inspection/Programming and Relearning/Initialization (to 12/2010) after the registration See:

Instrument Panel, Gauges and Warning Indicators/Tire Monitoring System/Testing and Inspection/Programming and

Relearning/Registration (to 12/2010) of the transmitter IDs into the tire pressure warning ECU if the ECU has been replaced.

PROCEDURE

1. PERFORM SIGNAL CHECK (VEHICLE SPEED SIGNAL AND ENGINE SPEED SIGNAL)

(a) Enter the signal check mode in TEST MODE PROCEDURE See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring

System/Testing and Inspection/Scan Tool Testing and Procedures/Test Mode Procedure (to 12/2010).

(b) Drive the vehicle at 20 km/h (12 mph) or more for 10 seconds to erase DTC C2191/91 and C2194/94.