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 |
Speed Signal Circuit
DESCRIPTION
The vehicle speed signal consists of pulses sent to the combination meter assembly
from the master cylinder solenoid (skid control ECU)*1 or skid control ECU (brake
actuator assembly)*2.
*1: for 4WD
*2: for 2WD
WIRING DIAGRA ...
Sound of Portable Player cannot be Heard from Speakers or Sound is Low
PROCEDURE
1.
CHECK PORTABLE PLAYER SETTINGS
(a) Check the portable player settings.
(1) Check that the volume is not set to "0".
(2) Check that the mute is off.
(b) Check that the sound of the portable player can ...