Toyota Camry (XV70): Vehicle Speed Information Communication Lost (C2178)
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. |
| 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
.gif)
after 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 On-vehicle Inspection of the meter/gauge system.
Click here
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 |
.gif) | REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER
|
| B |
| GO TO METER / GAUGE SYSTEM |
READ NEXT:
SEE MORE:
Lack of Power
DESCRIPTION
Problem Symptom Suspected Area
Trouble Area
Engine speed fluctuation due to abnormal combustion
Idle speed too low or high
Strong engine vibration due to above symptoms
Ignition malfunction
Deviation in air fuel ratio (Excessive or i
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE
1. INSPECT BRAKE BOOSTER ASSEMBLY (a) Airtightness check
(1) Start the engine and stop it after 1 or 2 minutes. Slowly depress the brake pedal several times.
If the brake pedal can be depressed nearly to the floor the first time, but on the 2nd and 3rd time
