DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH)
CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - BATTERY AND BODY GROUND)
CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - STOP LIGHT SWITCH)
CHECK VEHICLE TYPE
INSPECT FUSE (ECU-IG No.2 FUSE)
INSPECT BRAKE LIGHT RELAY (BRK LP RELAY)
CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - BRAKE LIGHT RELAY)
CHECK HARNESS AND CONNECTOR (BRAKE LIGHT RELAY - BATTERY)
CHECK HARNESS AND CONNECTOR (BRAKE LIGHT RELAY - SKID CONTROL ECU)
CHECK VEHICLE TYPE
CHECK HARNESS AND CONNECTOR (BRAKE LIGHT RELAY - STOP LIGHT AND BODY GROUND)
CHECK STOP LIGHT CONTROL RELAY ASSEMBLY
CHECK HARNESS AND CONNECTOR (BRAKE LIGHT RELAY - STOP LIGHT AND BODY GROUND)
CHECK STOP LIGHT CONTROL RELAY ASSEMBLY
CHECK VEHICLE TYPE
CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - STOP LIGHT AND BODY GROUND)
CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - STOP LIGHT AND BODY GROUND)
INSPECT FUSE (STOP FUSE)
INSPECT STOP LIGHT SWITCH
CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - BODY GROUND)
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - STOP LIGHT SWITCH AND BATTERY)
LIGHTING SYSTEM - Stop Light Circuit
DESCRIPTION
When the stop light switch is turned on, current flows to the stop lights to illuminate them.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH) |
Operate the intelligent tester according to the display and select the "Data List".
Main Body| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| Stop Light SW | Stop light switch / ON or OFF | ON: Brake pedal depressed
OFF: Brake pedal released | - |
- OK:
- On the intelligent tester screen, each item changes between ON and OFF according to above chart
| 2.CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - BATTERY AND BODY GROUND) |
Disconnect the A39 relay connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| A39-6 (+B) - Body ground | Always | 11 to 14 V |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| A39-4 (GND) - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - STOP LIGHT SWITCH) |
Disconnect the A30 stop light switch connector.
Disconnect the A39 relay connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| A30-1 - A39-2 (STP) | Always | Below 1 Ω |
| A30-1 - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Check the vehicle type.
Result| Result | Proceed to |
| w/ VSC | A |
| w/o VSC | B |
| 5.INSPECT FUSE (ECU-IG No.2 FUSE) |
Remove the ECU-IG No.2 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 |
| ECU-IG No.2 fuse | Always | Below 1 Ω |
| 6.INSPECT BRAKE LIGHT RELAY (BRK LP RELAY) |
Remove the brake light relay from the engine room relay block.
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 to terminals 1 and 2 | 10 kΩ or higher |
| Battery voltage applied to terminals 1 and 2 | Below 1 Ω |
| 3 - 4 | Battery voltage not applied to terminals 1 and 2 | Below 1 Ω |
| Battery voltage applied to terminals 1 and 2 | 10 kΩ or higher |
| | REPLACE BRAKE LIGHT RELAY (BRK LP RELAY) ()
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| 7.CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - BRAKE LIGHT RELAY) |
Remove the brake light relay from the engine room relay block.
Disconnect the A39 stop light control relay connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| A39-8 (OUT) - Brake light relay terminal 4 | Always | Below 1 Ω |
| A39-6 (+B) - Brake light relay terminal 5 |
| A39-8 (OUT) - Body ground | Always | 10 kΩ or higher |
| A39-6 (+B) - Body ground |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 8.CHECK HARNESS AND CONNECTOR (BRAKE LIGHT RELAY - BATTERY) |
Remove the brake light relay from the engine room relay block.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
| Brake light relay terminal 1 - Body ground | Ignition switch ON | 11 to 14 V |
| Ignition switch off | Below 1 V |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 9.CHECK HARNESS AND CONNECTOR (BRAKE LIGHT RELAY - SKID CONTROL ECU) |
Remove the brake light relay from the engine room relay block.
Disconnect the A24 ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| Brake light relay terminal 2 - A24-16 (STPO) | Always | Below 1 Ω |
| Brake light relay terminal 2 - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
Check the vehicle type.
Result| Result | Proceed to |
| for Double Swing Out Type | A |
| except Double Swing Out Type | B |
| 11.CHECK HARNESS AND CONNECTOR (BRAKE LIGHT RELAY - STOP LIGHT AND BODY GROUND) |
Remove the brake light relay from the engine room relay block.
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 |
| Brake light relay terminal 3 - n1-2 (STP) | Always | Below 1 Ω |
| n1-4 (E) - Body ground |
| n1-2 (STP) - 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 |
| Brake light relay terminal 3 - Y1-2 (STP) | Always | Below 1 Ω |
| Y1-6 (E) - Body ground |
| Y1-2 (STP) - Body ground | Always | 10 kΩ or higher |
Disconnect the T1 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| Brake light relay terminal 3 - T1-1 (B) | Always | Below 1 Ω |
| T1-2 (E) - Body ground |
| T1-1 (B) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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| 12.CHECK STOP LIGHT CONTROL RELAY ASSEMBLY |
Temporarily replace the stop light control relay with a new or normally functioning one.
Check the stop light operation.
- OK:
- Stop light operation is normal.
| | REPLACE SKID CONTROL ECU ()
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| OK | |
| |
| REPLACE STOP LIGHT CONTROL RELAY ASSEMBLY ()
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| 13.CHECK HARNESS AND CONNECTOR (BRAKE LIGHT RELAY - STOP LIGHT AND BODY GROUND) |
Remove the brake light relay from the engine room relay block.
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 |
| Brake light relay terminal 3 - K4-5 (STP) | Always | Below 1 Ω |
| K4-3 (E) - Body ground |
| K4-5 (STP) - 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 |
| Brake light relay terminal 3 - L3-5 (STP) | Always | Below 1 Ω |
| L3-3 (E) - Body ground |
| L3-5 (STP) - Body ground | Always | 10 kΩ or higher |
Disconnect the S4 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| Brake light relay terminal 3 - S4-1 (B) | Always | Below 1 Ω |
| S4-2 (E) - Body ground |
| S4-1 (B) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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| 14.CHECK STOP LIGHT CONTROL RELAY ASSEMBLY |
Temporarily replace the stop light control relay with a new or normally functioning one.
Check the stop light operation.
- OK:
- Stop light operation is normal.
| OK | |
| |
| REPLACE STOP LIGHT CONTROL RELAY ASSEMBLY ()
|
|
Check the vehicle type.
Result| Result | Proceed to |
| for Double Swing Out Type | A |
| except Double Swing Out Type | B |
| 16.CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - STOP LIGHT AND BODY GROUND) |
Disconnect the A39 stop light control relay 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 |
| A39-8 (OUT) - n1-2 (STP) | Always | Below 1 Ω |
| n1-4 (E) - Body ground |
| n1-2 (STP) - 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 |
| A39-8 (OUT) - Y1-2 (STP) | Always | Below 1 Ω |
| Y1-6 (E) - Body ground |
| Y1-2 (STP) - Body ground | Always | 10 kΩ or higher |
Disconnect the T1 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| A39-8 (OUT) - T1-1 (B) | Always | Below 1 Ω |
| T1-2 (E) - Body ground |
| T1-1 (B) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK | |
| |
| REPLACE STOP LIGHT CONTROL RELAY ASSEMBLY ()
|
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| 17.CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - STOP LIGHT AND BODY GROUND) |
Disconnect the A39 stop light control relay 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 |
| A39-8 (OUT) - K4-5 (STP) | Always | Below 1 Ω |
| K4-3 (E) - Body ground |
| K4-5 (STP) - 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 |
| A39-8 (OUT) - L3-5 (STP) | Always | Below 1 Ω |
| L3-3 (E) - Body ground |
| L3-5 (STP) - Body ground | Always | 10 kΩ or higher |
Disconnect the S4 light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| A39-8 (OUT) - S4-1 (B) | Always | Below 1 Ω |
| S4-2 (E) - Body ground |
| S4-1 (B) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK | |
| |
| REPLACE STOP LIGHT CONTROL RELAY ASSEMBLY ()
|
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| 18.INSPECT FUSE (STOP FUSE) |
Remove the STOP fuse from the engine room relay block.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| STOP fuse | Always | Below 1 Ω |
| 19.INSPECT STOP LIGHT SWITCH |
Remove the stop light switch ().
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Switch Condition | Specified Condition |
| 1 - 2 | Switch pin released | Below 1 Ω |
| 1 - 2 | Switch pin pushed in | 10 kΩ or higher |
| | REPLACE STOP LIGHT SWITCH ()
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| 20.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - BODY GROUND) |
Disconnect the A30 stop light switch connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| A30-2 - Body ground | Always | 11 to 14 V |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 21.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - STOP LIGHT SWITCH AND BATTERY) |
Disconnect the A30 stop light switch connector.
Disconnect the 2B ECU connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| 2B-22 (STP) - Body ground | Brake pedal depressed | 11 to 14 V |
| Brake pedal released | Below 1 V |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 2B-22 (STP) - A30-1 | Always | Below 1 Ω |
| A30-1 - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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