Toyota Venza Quiz
Tire Pressure Monitoring

Vehicle Speed or Engine Speed Signal Malfunction (C2173/73)

In this manual: Tire Pressure Monitoring
Introduction — 15Maintenance — 8Audio / Video — 102Garage Door Opener — 8Navigation / Multi Info Display — 81Park Assist / Monitoring — 50Brake (front) — 7Brake (rear) — 7Brake Control / Dynamic Control Systems — 79Brake System (other) — 28Parking Brake — 22Axle And Differential — 44Drive Shaft / Propeller Shaft — 24Mf1a Transfer / 4wd / Awd — 46U660e Automatic Transmission / Transaxle — 1241ar-fe Cooling — 311ar-fe Emission Control — 101ar-fe Engine Control — 1331ar-fe Engine Mechanical — 441ar-fe Fuel — 311ar-fe Intake / Exhaust — 211ar-fe Lubrication — 111ar-fe Starting — 16Cruise Control — 241ar-fe Battery / Charging — 162gr-fe Battery / Charging — 17Networking — 67Power Distribution — 8Power Assist Systems — 34Steering Column — 37Steering Gear / Linkage — 29Alignment / Handling Diagnosis — 4Front Suspension — 39Rear Suspension — 35Tire / Wheel — 4Tire Pressure Monitoring — 35Door / Hatch — 83Exterior Panels / Trim — 56Horn — 4Lighting (ext) — 89Mirror (ext) — 36Sliding Roof / Convertible — 26Window / Glass — 87Wiper / Washer — 30Door Lock — 85Heating / Air Conditioning — 82Interior Panels / Trim — 20Lighting (int) — 37Meter / Gauge / Display — 41Mirror (int) — 9Power Outlets (int) — 10Seat — 84Seat Belt — 43Supplemental Restraint Systems — 131Theft Deterrent / Keyless Entry — 155
~2min read
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 C2124/24 (No Signal from Transmitter).

DTC No.

DTC Detection Condition

Trouble Area

C2173/73

When either of the following conditions is met for a total of 15 minutes:

(a) No engine speed signal while vehicle speed is 8 km/h or more

(b) No vehicle speed signal while engine speed is a specified value
  • Combination meter
  • ECM
  • Wire harness or connector
  • Tire pressure warning ECU

HINT:

This DTC is set at the same time as DTCs C2121/21 to C2124/24 are being set.

WIRING DIAGRAM
CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
  • It is necessary to perform registration (See page ) 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 page ).


(b) Drive the vehicle at 20 km/h or more for 10 seconds to clear DTC C2191/91.

(c) Start the engine and allow it to run at 1000 rpm for 3 seconds or more to clear DTC C2194/94.

(d) Check for signal check DTCs.

Result

Proceed to

DTCs C2191/91 and C2194/94 are cleared

A

DTC C2191/91 is output

B

DTC C2194/94 is output

C

HINT:

DTCs C2181/81 to C2184/84 (Transmitter ID not Received) are output at this time, but they are not related to this check.


A

USE SIMULATION METHOD TO CHECK

B

GO TO DTC C2191/91

C

GO TO DTC C2194/94

Test yourself

A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.