Dtc C2173/73 Vehicle Speed Or Engine Speed Signal Malfunction
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PERFORM SIGNAL CHECK (VEHICLE SPEED SIGNAL AND ENGINE SPEED SIGNAL)
DTC C2173/73 Vehicle Speed or Engine Speed Signal Malfunction |
DESCRIPTION
The tire pressure warning ECU receives a vehicle speed signal from the combination meter and an engine speed signal from the ECM. The tire pressure warning ECU uses these signals to detect DTCs C2121/21 to C2124/24 (No Signal from Transmitter in Main Mode).DTC No.
| DTC Detection Condition
| Trouble Area
|
C2173/73
| Following condition (a) or (b) is met for a total of 15 minutes:
(a) No engine speed signal while vehicle speed is 8 km/h (5 mph) or more
(b) No vehicle speed signal while engine speed is a specified value
| - Combination meter
- ECM
- Harness or connector
- Tire pressure warning ECU
|
- HINT:
- This DTC is set at the same time as DTCs C2121/21 to C2124/24 are being set.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using a Techstream and write them down before removal.
- It is necessary to perform registration (YARIS_NCP93 RM000000XN107JX.html) of the transmitter IDs into the tire pressure warning ECU after the ECU has been replaced.
| 1.PERFORM SIGNAL CHECK (VEHICLE SPEED SIGNAL AND ENGINE SPEED SIGNAL) |
Enter the signal check mode in TEST MODE PROCEDURE (YARIS_NCP93 RM000000XN007FX.html).
Drive the vehicle at 20 km/h (12 mph) or more for 10 seconds to erase DTC C2191/91 and C2194/94.
Check the test mode DTCs.
ResultResult
| Proceed to
|
DTCs C2191/91 and C2194/94 are erased
| A
|
DTC C2191/91 is output
| B
|
DTC C2194/94 is output
| C
|
- HINT:
- DTCs C2181/81 to C2184/84 (Transmitter ID not Received) are output at this time, but they are not related to this check.
