DESCRIPTION
The main body ECU (driver side junction block assembly) controls the headlight relays.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) Check that the relays operate.
Main Body
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Headlight Relay |
Headlight Relay |
ON/OFF |
- |
OK:
Headlight relays operate. (Low beam headlights illuminate.)
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY |
(a) Remove the power distributor (engine room junction block assembly)
from the engine room relay block (See page
|
|
(b) Connect a positive (+) lead from the battery to terminal 1A-1.
(c) Connect a negative (-) lead from the battery to terminal 1F-17.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1D-1 - Battery negative |
Always |
11 to 14 V |
1D-2 - Battery negative |
Always |
11 to 14 V |
*1 |
Component without harness connected (Power Distributor (Engine Room Junction Block Assembly)) |
NG | ![]() |
REPLACE POWER DISTRIBUTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY) |
|
3. |
CHECK HARNESS AND CONNECTOR (BATTERY - ENGINE ROOM JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 1A power distributor (engine room junction block assembly) connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connector |
Condition |
Specified Condition |
---|---|---|
1A-1 - Body ground |
Always |
11 to 14 V |
*1 |
Front view of wire harness connector (to Power Distributor (Engine Room Junction Block Assembly)) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - MAIN BODY ECU) |
(a) Disconnect the 1F power distributor (engine room junction block assembly) connector. |
|
(b) Disconnect the 2G main body ECU (driver side junction block assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1F-17 - 2G-35 |
Always |
Below 1 Ω |
1F-17 - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Power Distributor (Engine Room Junction Block Assembly)) |
*2 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) |
OK | ![]() |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
NG | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE TRANSFER AND TRANSAXLE SETTING STUD BOLT
(a) Remove the 4 transfer and transaxle setting stud bolts.
2. REMOVE NO. 2 TRANSFER CASE PLUG
(a) Remove the No. ...
Customize Parameters
CUSTOMIZE PARAMETERS
1. INTUITIVE PARKING ASSIST SYSTEM (See page
)
2. POWER DOOR LOCK CONTROL SYSTEM (See page
)
3. WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Key System) (See page
)
4. WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Key System) (Se ...
Steering Position Sensor Malfunction (B2414)
DESCRIPTION
The AFS ECU (headlight swivel ECU assembly) receives signals indicating the swerve-angle
from the steering angle sensor using CAN communication.
DTC No.
DTC Detection Condition
Trouble Area
B241 ...