Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001ES1G
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 12/2021]
Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: C2178; Vehicle Speed Information Communication Lost; 2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]

DTC

C2178

Vehicle Speed Information Communication Lost

DESCRIPTION

The tire pressure warning ECU and receiver receives signals from the combination meter assembly via CAN communication. If a malfunction occurs in this communication line, DTC C2178 is output.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

C2178

Vehicle Speed Information Communication Lost

Communication between the combination meter assembly and tire pressure warning ECU and receiver is interrupted for 10 seconds or more.

  • Meter / gauge system
  • Tire pressure warning ECU and receiver

w/ Tire Inflation Pressure Display Function

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the tire pressure warning ECU and receiver, read the transmitter IDs and number of the transmitters (4 or 5) stored in the old ECU using the Techstream and write them down before removal.
  • It is necessary to perform initialization 2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION after registration 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 RAV4 HV [10/2019 - 12/2021]; TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: REGISTRATION of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced.

PROCEDURE

1.

INSPECT COMBINATION METER ASSEMBLY (ON-VEHICLE INSPECTION)

(a) Perform Operation Check of the meter/gauge system.

Click here 2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: OPERATION CHECK

HINT:

Check the meter function by referring to On-vehicle Inspection for the combination meter assembly.

Result

Proceed to

Combination meter assembly is normal

A

Combination meter assembly is malfunctioning

B

A

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

B

GO TO METER / GAUGE SYSTEM