DESCRIPTION
The skid control ECU converts wheel speed sensor signals into 4-pulse signals and sends them to the combination meter. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the power management control ECU. The power management control ECU determines the vehicle speed based on the frequency of these pulse signals.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B2283 |
Both conditions are met:
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When the power management control ECU is replaced with a new one and the cable from the negative (-) battery terminal is connected, the power source mode becomes the on (IG) mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
NG |
GO TO CAN COMMUNICATION SYSTEM |
|
2. |
CHECK SPEEDOMETER OPERATION |
NG |
GO TO METER / GAUGE SYSTEM (Speedometer Malfunction) |
|
3. |
CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
|
4. |
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
|
5. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER - POWER MANAGEMENT CONTROL ECU) |
NG |
GO TO STEP 8 |
|
6. |
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 / Power Source Control / Data List.
(e) Read the Data List according to the display on the Techstream.
Power Source Control
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Vehicle Speed Signal |
Vehicle speed signal/Stop or Run |
Stop: Vehicle stopped Run: Vehicle running |
- |
OK:
Stop (vehicle is stopped) and Run (vehicle is running) appear on the screen.
NG |
GO TO METER / GAUGE SYSTEM (Speedometer Malfunction) |
|
7. |
CHECK SPEED SIGNAL INPUT STATUS |
OK |
REPLACE POWER MANAGEMENT CONTROL ECU |
NG |
GO TO METER / GAUGE SYSTEM (Speed Signal Circuit) |
8. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 1 JUNCTION BLOCK) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - NO. 1 JUNCTION BLOCK) |
|
9. |
CHECK HARNESS AND CONNECTOR (NO. 1 JUNCTION BLOCK - POWER MANAGEMENT CONTROL ECU) |
OK |
REPLACE NO. 1 JUNCTION CONNECTOR |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 JUNCTION BLOCK - POWER MANAGEMENT CONTROL ECU) |
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Communication Method
Main Body ECU (Driver Side Junction Block Assembly)
Combination Meter Assembly
Driver side door ...
System Diagram
SYSTEM DIAGRAM
1. CAN AND DIRECT LINE SIGNALS
2. INPUT AND OUTPUT SIGNALS OF THE ACCESSORY METER ASSEMBLY
Warning light or indicator light
Communication Signal
Receiver
Communication Line
Sender
...
Removal
REMOVAL
PROCEDURE
1. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable
is reconnected (See page ).
3. REMOVE FRONT WHEE ...