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 |
Navigation Voice Circuit
DESCRIPTION
This circuit is used when the voice guidance in the navigation system is on or
an incoming cellular phone voice in the "Bluetooth" hands-free system is heard.
Using this circuit, the navigation receiver assembly sends the signals to t ...
Removal
REMOVAL
PROCEDURE
1. TABLE OF BOLT, SCREW AND NUT
HINT:
All bolts, screws and nuts relevant to installing and removing the instrument
panel are shown along with their alphabet code in the table below.
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL ...