DESCRIPTION
When the main body ECU receives a high beam turn on signal, the main body ECU activates the bi-function by controlling the BI-XENON relay. The bi-function increases the upper illumination area of the discharge bulb (low beam) by moving a shade using a solenoid built into the headlight unit.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
CHECK OPERATION (LOW BEAM HEADLIGHTS) |
(a) Check the operation of the low beam headlights.
OK:
Low beam headlights operate normally.
NG | ![]() |
GO TO PROBLEM SYMPTOMS TABLE |
|
2. |
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 high beam headlights illuminate.
Main Body
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Head Light Hi |
High beam headlight relay |
ON/OFF |
- |
OK:
High beam headlights illuminate.
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
3. |
INSPECT BI-XENON RELAY (BI-XENON) |
(a) Remove the BI-XENON relay from the power distributor (engine room junction block assembly). |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
3 - 5 |
Battery voltage applied to terminals 1 and 2 |
Below 1 Ω |
3 - 5 |
Battery voltage not applied between terminals |
10 kΩ or higher |
NG | ![]() |
REPLACE BI-XENON RELAY |
|
4. |
CHECK HARNESS AND CONNECTOR (BATTERY - BI-XENON RELAY) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Relay terminal 2 - Body ground |
Always |
11 to 14 V |
Relay terminal 5 - Body ground |
Always |
11 to 14 V |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK HARNESS AND CONNECTOR (BI-XENON RELAY - HEADLIGHT ASSEMBLY) |
(a) Disconnect the A53 headlight assembly LH connector.
(b) Disconnect the A52 headlight assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Relay terminal 3 - A53-4 |
Always |
Below 1 Ω |
Relay terminal 3 - A52-4 |
Always |
Below 1 Ω |
Relay terminal 3 - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
6. |
CHECK HARNESS AND CONNECTOR (BI-XENON RELAY - DRIVER SIDE JUNCTION BLOCK) |
(a) Disconnect the 2C main body ECU (driver side junction block assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Relay terminal 1 - 2C-23 |
Always |
Below 1 Ω |
2C-23 - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Disassembly
DISASSEMBLY
PROCEDURE
1. INSPECT FRONT OIL PUMP AND GEAR BODY SUB-ASSEMBLY
2. REMOVE STATOR SHAFT ASSEMBLY
(a) Using a "TORX" wrench (T30), remove the 16 bolts and stator shaft
assembly from the oil pump body.
NOTICE:
Keep ...
Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
The rear speed sensor is a component of the rear axle hub and bearing
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Terminals Of Ecu
TERMINALS OF ECU
1. TCM
HINT:
Each TCM terminal standard voltage is shown in the table below.
In the table, first follow the information under "Condition". Look under "Terminal
No. (Symbol)" for the terminals to be inspected. The st ...