B2059

PRE-COLLISION: PRE-COLLISION SYSTEM: B2059: Vehicle Speed Malfunction

DTC B2059 - Vehicle Speed Malfunction

DESCRIPTION

The distance control ECU and the skid control ECU use CAN communication to send vehicle speed information to the seat belt control ECU. The distance control ECU receives vehicle speed information from the skid control ECU via the combination meter and ECM. This DTC is output when the difference between the vehicle speed information from the distance control ECU and the skid control ECU is more than the specified value.






INSPECTION PROCEDURE
NOTICE: When the seat belt control ECU is replaced with a new one, Initialization must be performed Pre-Collision System.

PROCEDURE

1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)
(a) Clear the DTCs Pre-Collision System.
(b) Recheck for DTCs.
OK:
DTC U0100, U0122 or U1101 is not output.
NG -- GO TO CAN COMMUNICATION SYSTEM
OK -- Continue to next step.
2. CHECK DTC OUTPUT (SFI SYSTEM)
(a) Clear the DTCs DTC Check / Clear.
(b) Recheck for DTCs.
OK:
DTC P0500 is not output.
NG -- GO TO SFI SYSTEM
OK -- Continue to next step.
3. CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM)
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Turn the engine switch off.
(c) Start the engine.
(d) Drive the vehicle at a speed of 30 km/h (18 mph) or more for at least 60 seconds.
(e) Recheck for DTCs.
OK:
DTC C0200, C0205, C0210, C0215, C1235, C1236, C1238 or C1239 is not output.
NG -- GO TO VEHICLE STABILITY CONTROL SYSTEM
OK -- Continue to next step.
4. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Data List.
(e) Check the Data List for proper functioning of the vehicle speed meter.
Combination Meter:






OK:
Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed.
NG -- GO TO METER / GAUGE SYSTEM
OK -- Continue to next step.
5. REPLACE DISTANCE CONTROL ECU
(a) Replace the distance control ECU Components.
(b) Initialize the distance control ECU Installation.
NEXT -- Continue to next step.
6. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM)
(a) Clear the DTCs Pre-Collision System.
(b) Recheck for DTCs.
OK:
DTC B2059 is not output.
NG -- REPLACE SEAT BELT CONTROL ECU
OK -- END