DESCRIPTION
The main body ECU (multiplex network body ECU) controls the high beam headlights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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for HEV Model: Click here
for Gasoline Model: Click here
PROCEDURE
1. | PERFORM ACTIVE TEST USING GTS |
(a) Enter the following menus: Body Electrical / Main Body / Active Test.
(b) Perform the Active Test according to the display on the GTS.
Body Electrical > Main Body > Active Test
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
---|---|---|---|
High Beam Headlight | High beam headlights |
OFF or ON | - |
Tester Display |
---|
High Beam Headlight |
OK:
High beam headlights illuminate.
OK | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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2. |
INSPECT H-LP HI RELAY |
(a) Remove the H-LP HI relay from the No. 1 engine room relay block.
(b) Inspect the H-LP HI relay.
Click here
NG |
REPLACE H-LP HI RELAY |
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3. |
CHECK HARNESS AND CONNECTOR (H-LP HI RELAY - BATTERY) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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4. |
CHECK HARNESS AND CONNECTOR (H-LP HI RELAY - HEADLIGHT ASSEMBLY LH AND HEADLIGHT ASSEMBLY RH AND BODY GROUND) |
(a) Disconnect the A131 headlight assembly LH connector.
(b) Disconnect the A134 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 - A131-1 (SOL) |
Always | Below 1 Ω |
Relay terminal 3 - A134-1 (SOL) |
Always | Below 1 Ω |
A131-5 (E) - Body ground |
Always | Below 1 Ω |
A134-5 (E) - Body ground |
Always | Below 1 Ω |
Relay terminal 3 - Body ground |
Always | 10 kΩ or higher |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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5. |
CHECK HARNESS AND CONNECTOR (H-LP HI RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the I85 main body ECU (Multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition |
Specified Condition |
---|---|---|
Relay terminal 1 - I85-22 (DIM) |
Always | Below 1 Ω |
Relay terminal 1- Body ground |
Always | 10 kΩ or higher |
OK | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |