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:
Tire Pressure Monitor ECU Communication Stop (C2179)
DESCRIPTION The main body ECU (multiplex network body ECU) sends signals to the tire pressure warning ECU and receiver via a direct line.
DTC No. Detection Item
DTC Detection Condition
Initialization Switch Error (for Test Diagnosis) (C2198)
DESCRIPTION The switch circuit inside the combination meter assembly turns on and off according to the steering pad switch assembly operation.
During test mode, the tire pressure warning light blink
Lost Communication with Brake System Control Module (U0129)
DESCRIPTION The tire pressure warning ECU and receiver receives signals from the skid control ECU (brake actuator assembly) via CAN communication system.
DTC No. Detection Item
DTC Detect
SEE MORE:
Rear Disc Brake Pad(w/ Electric Parking Brake System)
ComponentsCOMPONENTS ILLUSTRATION
*1 NO. 2 PARKING BRAKE WIRE ASSEMBLY
*2 REAR DISC BRAKE ANTI-SQUEAL SHIM KIT
*3 REAR DISC BRAKE PAD
*4 REAR DISC BRAKE CYLINDER ASSEMBLY
*5 REAR NO. 1 DISC BRAKE ANTI-SQUEAL SHIM
*6 REAR NO. 2 DISC BRAKE ANTI-S
Indications on multi-information display - LTA (Lane Tracing
Assist)
The illustration used is intended as an example, and may differ from
the image that is actually displayed on the multi-information display.
LTA indicator
The illumination condition of the
indicator informs the driver of
the system operation status.
Illuminated in white:
LTA system is
