DESCRIPTION
The main body ECU receives headlight dimmer switch information signals, and illuminates the low beam headlight.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (HEADLIGHT RELAY) |
(a) Using the Techstream, perform the Active Test (See page
).
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Headlight Relay |
Low beam headlight relay |
ON/OFF |
- |
OK:
Headlight relay operates (low beam headlights illuminate).
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT HEADLIGHT RELAY (H-LP LO) |
(a) Remove the headlight relay from the engine room relay block, junction block. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
3 - 5 |
Battery voltage not applied between terminals 1 and 2 |
10 kΩ or higher |
Battery voltage applied between terminals 1 and 2 |
Below 1 Ω |
NG | ![]() |
REPLACE HEADLIGHT RELAY |
|
3. |
CHECK HARNESS AND CONNECTOR (BATTERY - HEADLIGHT RELAY [H-LP LO]) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (HEADLIGHT RELAY [H-LP LO] - MAIN BODY ECU) |
(a) Remove the main body ECU (See page ).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Headlight relay terminal 2 - A-15 (HRLY) |
Always |
Below 1 Ω |
A-15 (HRLY) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Line
ECM
Main Body ECU (Multiplex Network Body ECU)
Shift position P signal
Transmission informatio ...
Registration
REGISTRATION
PROCEDURE
1. DESCRIPTION OF CODE REGISTRATION
The key has 2 codes: the key code (immobiliser code) and the wireless code (recognition
code). Both of these codes need to be registered. For wireless code registration
procedures, refer to the ...