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
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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:
Glossary Of Sae And Toyota Terms
GLOSSARY OF SAE AND TOYOTA TERMS This glossary lists all SAE-J1930 terms and abbreviations used in this manual in compliance with SAE recommendations, as well as their TOYOTA equivalents.
SAE Abbreviation SAE Term
TOYOTA Term ( )-Abbreviation
A/C Air Conditioning
Air Con
Reassembly
REASSEMBLY CAUTION / NOTICE / HINT
CAUTION: If the rear disc brake cylinder assembly has been disassembled, perform air bleeding for the rear disc brake cylinder assembly.
Click here
NOTICE:
Make sure not to scratch, damage or apply excessive force to any of the internal components of th
