Lighting System - Taillight Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TAILLIGHT RELAY)
INSPECT FUSE (TAIL FUSE)
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY)
CHECK VEHICLE TYPE
CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT - MAIN BODY ECU AND BODY GROUND)
CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT - MAIN BODY ECU AND BODY GROUND)
CHECK HARNESS AND CONNECTOR (REAR LIGHT - MAIN BODY ECU AND BODY GROUND)
LIGHTING SYSTEM - Taillight Circuit
DESCRIPTION
The main body ECU receives a light control switch information signal from the headlight dimmer switch, and illuminates the taillights.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TAILLIGHT RELAY) |
Operate the intelligent tester according to the steps on the display and select "Active Test".
Main Body| Tester Display | Test Part | Control Range | Diagnostic Note |
| Taillight Relay | Taillight | ON or OFF | - |
- OK:
- Taillight turns on/turns off.
| OK | |
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| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE ()
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| 2.INSPECT FUSE (TAIL FUSE) |
Remove the TAIL fuse from the main body ECU.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| TAIL fuse | Always | Below 1 Ω |
| 3.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY) |
Disconnect the 2A ECU connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| 2A-1 - Body ground | Always | 11 to 14 V |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Check the vehicle type.
Result| Result | Proceed to |
| for Double Swing Out Type | A |
| except Double Swing Out Type | B |
| 5.CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT - MAIN BODY ECU AND BODY GROUND) |
Disconnect the 2C ECU connector.
for LH:
Disconnect the n1 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 2C-22 - n1-5 (TL) | Always | Below 1 Ω |
| n1-4 (E) - Body ground |
| n1-5 (TL) - Body ground | Always | 10 kΩ or higher |
for RH:
Disconnect the Y1 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 2C-22 - Y1-5 (TL) | Always | Below 1 Ω |
| Y1-6 (E) - Body ground |
| Y1-5 (TL) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 6.CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT - MAIN BODY ECU AND BODY GROUND) |
Disconnect the 2C ECU connector.
for LH:
Disconnect the K4 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 2C-22 - K4-6 (TL) | Always | Below 1 Ω |
| K4-3 (E) - Body ground |
| K4-6 (TL) - Body ground | Always | 10 kΩ or higher |
for RH:
Disconnect the L3 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 2C-22 - L3-6 (TL) | Always | Below 1 Ω |
| L3-3 (E) - Body ground |
| L3-6 (TL) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 7.CHECK HARNESS AND CONNECTOR (REAR LIGHT - MAIN BODY ECU AND BODY GROUND) |
Disconnect the 2C ECU connector.
for LH:
Disconnect the S11 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 2C-22 - S11-3 | Always | Below 1 Ω |
| S11-1 - Body ground |
| S11-3 - Body ground | Always | 10 kΩ or higher |
for RH:
Disconnect the S12 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 2C-22 - S12-3 | Always | Below 1 Ω |
| S12-1 - Body ground |
| S12-3 - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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