C2191

DTC C2191/91 Vehicle Speed Signal Error (Test Mode DTC)

DESCRIPTION
The tire pressure warning ECU receives speed signals from the skid control ECU via CAN communication. This DTC is stored upon entering test mode, and cleared when a vehicle speed signal of 20 km/h (12 mph) is detected for 3 seconds or more. This DTC is output only in test mode.

C2191/91:

INSPECTION PROCEDURE

NOTICE:
^ When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using the intelligent tester and write them down before removal.
^ It is necessary to perform initialization after registration of the transmitter IDs into the tire pressure warning ECU after the ECU has been replaced.

Steps 1-2(Part 1):

Steps 2(Part 2)-4: