Dtc C2191/91 Vehicle Speed Signal Error (Test Mode Dtc)
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE OF INTELLIGENT TESTER
CHECK DTC
CHECK DTC
DTC C2191/91 Vehicle Speed Signal Error (Test Mode DTC) |
DESCRIPTION
The tire pressure monitor ECU receives a speed signal from the combination meter. This DTC is stored upon entering test mode but erased when a vehicle speed signal of 12 mph (20 km/h) is detected for 3 seconds or more. The DTC is output only in test mode.DTC No.
| DTC Detecting Condition
| Trouble Area
|
C2191/91
| Speed sensor circuit malfunction.
| - Combination meter assembly
- Multiplex communication system
- Tire pressure monitor ECU
- Wire harness
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- It is necessary to register an ID code after replacing the tire pressure monitor valve sub-assembly and/or the tire pressure monitor ECU (Click here).
- HINT:
- Start the inspection from step 1 when using the intelligent tester, and start from step 2 when not using the intelligent tester.
| 1.READ VALUE OF INTELLIGENT TESTER |
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG).
Select the item below in the DATA LIST, and read its value displayed on the intelligent tester.
- TIRE PRESSURE:
Item
| Normal Condition
|
VEHICLE SPEED
| Actual vehicle speed
|
Check that the value indicated on the tester and the combination meter are the same.
- OK:
- Indicates actual speed.
| OK |
|
|
|
| REPLACE TIRE PRESSURE MONITOR ECU |
|
Check for DTC.
- Result:
Condition
| Proceed to
|
B1247 is output
| A
|
B1247 is not output
| B
|
| | REPAIR CIRCUIT INDICATED BY OUTPUT CODE |
|
|
Check for DTC.
- Result:
Condition
| Proceed to
|
Meter ECU communication DTC is output.
| A
|
Meter ECU communication DTC is not output.
| B
|
| | REPLACE COMBINATION METER ASSEMBLY |
|
|
| B |
|
|
|
| REPLACE TIRE PRESSURE MONITOR ECU |
|
