DESCRIPTION
Illumination of the taillights and license plate light is controlled by the main body ECU (multiplex network body ECU).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. | PERFORM ACTIVE TEST USING TECHSTREAM (TAILLIGHT RELAY) |
(a) Using the Techstream, perform the Active Test.
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Body Electrical > Main Body > Active Test Tester Display | Measurement Item | Control Range | Diagnostic Note |
---|---|---|---|
Taillight Relay | Taillight relay | ON or OFF | - |
Tester Display |
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Taillight Relay |
Result | Proceed to |
---|---|
Taillights, license lights, clearance light and side marker lights come on | A |
Taillights, license lights, clearance light and side marker lights do not come on | B |
A | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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2. | CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BATTERY) |
(a) Disconnect the instrument panel junction block assembly connector.
(b) 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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3. | INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Remove the instrument panel junction block assembly.
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(b) Remove the instrument panel junction block assembly.
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(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
4A-37 - Battery negative (-) terminal | Battery voltage applied between terminals 4F-1 and A-14 (TRLY) | 11 to 14 V |
Battery voltage not applied between terminals 4F-1 and A-14 (TRLY) | Below 1 V | |
4A-38 - Battery negative (-) terminal | Battery voltage applied between terminals 4F-1 and A-14 (TRLY) | 11 to 14 V |
Battery voltage not applied between terminals 4F-1 and A-14 (TRLY) | Below 1 V | |
4B-24 - Battery negative (-) terminal | Battery voltage applied between terminals 4F-1 and A-14 (TRLY) | 11 to 14 V |
Battery voltage not applied between terminals 4F-1 and A-14 (TRLY) | Below 1 V | |
4B-25 - Battery negative (-) terminal | Battery voltage applied between terminals 4F-1 and A-14 (TRLY) | 11 to 14 V |
Battery voltage not applied between terminals 4F-1 and A-14 (TRLY) | Below 1 V | |
4B-26 - Battery negative (-) terminal | Battery voltage applied between terminals 4F-1 and A-14 (TRLY) | 11 to 14 V |
Battery voltage not applied between terminals 4F-1 and A-14 (TRLY) | Below 1 V |
OK | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG | REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |