DESCRIPTION
This DTC is stored when there is a problem in the ACC output circuit. The ACC circuit is the circuit that goes from inside the power management control ECU to the ACC relay.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B2274 |
The ACC relay actuation circuit inside the power management control ECU or other related circuit is malfunctioning. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
|
3. |
CHECK HARNESS AND CONNECTOR |
(a) Disconnect the 2G connector from the main body ECU (driver side junction block assembly).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D43-19 (ACCD) - 2G-9 |
Always |
Below 1 Ω |
D43-19 (ACCD) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Power Management Control ECU) |
*2 |
Front view of wire harness connectors (to Main Body ECU (Driver Side Junction Block Assembly)) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
INSPECT ACC RELAY |
(a) Remove the ACC relay from the main body ECU (driver side junction block assembly). |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1 - 2 |
Always |
93.8 to 136.4 Ω |
3 - 5 |
When battery voltage is not applied to terminals 1 and 2 |
10 kΩ or higher |
3 - 5 |
When battery voltage is applied to terminals 1 and 2 |
Below 1 Ω |
NG |
REPLACE ACC RELAY |
|
6. |
INSPECT MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
(a) Remove the main body ECU (driver side junction block assembly) (See page ).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
2G-9 - ACC relay terminal 2 |
Always |
Below 1 Ω |
2G-9 - Body ground |
Always |
10 kΩ or higher |
2F-16 - ACC relay terminal 1 |
Always |
Below 1 Ω |
2F-16 - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) |
*3 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) |
*2 |
Component without relay connected (ACC Relay Terminal) |
- |
- |
OK |
REPLACE POWER MANAGEMENT CONTROL ECU |
NG |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
Operation Check
OPERATION CHECK
1. CHECK BASIC OPERATION
(a) Conditions necessary for the power back door to open:
The power back door main switch is off (switch is not pressed).
The back door is unlocked (except wireless operation).
The vehicle speed is 3 k ...
Main Body Ecu
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. REMOVE UPPER INSTRUMENT PANEL
HINT:
Refer to the procedure up to Remove Upper Instrument Panel Sub-assembly (See
page ).
2. REMOVE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEM ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL POWER SEAT SWITCH
(a) Install the power seat switch with the 3 screws.
(b) Connect the connector.
2. INSTALL FRONT SEAT CUSHION SHIELD ASSEMBLY
3. INSTALL SLID ...