Lexus ES: 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. | -
Meter / gauge system
-
Tire pressure warning ECU and receiver
| - |
CAUTION / NOTICE / HINT
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 |
B | | GO TO METER / GAUGE SYSTEM |
READ NEXT:
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SEE MORE:
DATA LIST / ACTIVE TEST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of switches,
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System (for G
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