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 |
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 GTS and write them down before removal.
It is necessary to perform initializationSuspension>TIRE PRESSURE MONITORING>TIRE PRESSURE WARNING SYSTEM>INITIALIZATION201906,999999,_53,_078885,_0382739,RM100000001IHE2,after registrationSuspension>TIRE PRESSURE MONITORING>TIRE PRESSURE WARNING SYSTEM>REGISTRATION201906,999999,_53,_078885,_0382739,RM100000001IHE1,of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced.
Perform Operation Check of the meter/gauge system.
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
for Standard Roof:
for High Roof:
B