DESCRIPTION
Upon receiving the hill-start assist control operating signal from the master cylinder solenoid (skid control ECU), the Stop light control relay (Stop light switch assembly) contact turns on and the stop lights come on.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1380 |
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
HINT:
When DTC C1425 is output together with DTC C1380, inspect and repair the trouble areas indicated by DTC C1425 first (See page ).
PROCEDURE
1. |
CHECK STOP LIGHT OPERATION |
(a) Check that the stop lights come on when the brake pedal is depressed and go off when the brake pedal is released.
OK:
Condition |
Illumination Condition |
---|---|
Brake pedal depressed. |
ON |
Brake pedal released. |
OFF |
NG |
INSPECT LIGHTING SYSTEM (STOP LIGHT CIRCUIT) |
|
2. |
READ VALUE USING TECHSTREAM (STOP LIGHT SW) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Select the Data List on the Techstream (See page ).
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Stop Light SW |
Stop light switch assembly / ON or OFF |
ON: Brake pedal depressed OFF: Brake pedal released |
- |
(d) Check that the stop light switch assembly condition observed on the Techstream changes according to brake pedal operation.
OK:
The Techstream displays ON or OFF according to brake pedal operation.
NG |
GO TO STEP 8 |
|
3. |
PERFORM ACTIVE TEST USING TECHSTREAM (STOP LIGHT RELAY) |
(a) Select the Active Test on the Techstream (See page ).
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Stop Light Relay |
Stop light control relay (Stop light switch assembly) |
Relay (Switch) ON/OFF |
Stop lights come on |
(b) Perform the Active Test of the stop light control relay (stop light switch assembly) using the Techstream.
(c) Select the Data List on the Techstream (See page ).
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Stop Light Relay Output |
Stop light control relay (Stop light switch assembly) output / ON or OFF |
ON: Relay output on OFF: Relay output off |
- |
(d) Check for stop light control relay (stop light switch assembly) operation using the Data List and stop light operation by performing an Active Test.
Result |
Proceed to |
---|---|
Data List content and stop light operation are normal. |
A |
Data List content and stop light operation are abnormal or Data List content is normal but stop lights do not turn on or off. |
B |
B |
GO TO STEP 6 |
|
4. |
CHECK HARNESS AND CONNECTOR (STP2 TERMINAL) |
(a) Turn the ignition switch off. |
|
(b) Make sure that there is no looseness at the locking part and the connecting part of the connector.
(c) Disconnect the A6 skid Control ECU connector.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A6-45 (STP2) - Body ground |
Stop light switch assembly ON (Brake pedal depressed) |
11 to 14 V |
A6-45 (STP2) - Body ground |
Stop light switch assembly OFF (Brake pedal released) |
Below 1.5 V |
*a |
Front view of wire harness connector (to Skid Control ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (STP2 CIRCUIT) |
|
5. |
RECONFIRM DTC |
(a) Reconnect the skid control ECU connector.
(b) Clear the DTCs (See page ).
(c) Turn the ignition switch to ON.
(d) Perform a road test.
(e) Check if the same DTC is output (See page
).
Result |
Proceed to |
---|---|
DTC C1380 is not output. |
A |
DTC C1380 is output. |
B |
A |
CHECK FOR INTERMITTENT PROBLEMS |
B |
REPLACE MASTER CYLINDER SOLENOID |
6. |
CHECK STOP LIGHT SWITCH ASSEMBLY |
(a) Check the stop light control relay (stop light switch assembly) (See page ).
OK:
The stop light control relay (stop light switch assembly) is normal.
NG |
REPLACE STOP LIGHT SWITCH ASSEMBLY |
|
7. |
CHECK HARNESS AND CONNECTOR (STPO TERMINAL) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. |
|
(b) Disconnect the A6 skid control ECU connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A6-16 (STPO) - Body ground |
Always |
11 to 14 V |
*a |
Front view of wire harness connector (to Skid Control ECU) |
OK |
REPLACE MASTER CYLINDER SOLENOID |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (STPO CIRCUIT) |
8. |
CHECK HARNESS AND CONNECTOR (STP TERMINAL) |
(a) Turn the ignition switch off. |
|
(b) Make sure that there is no looseness at the locking part and the connecting part of the connector.
(c) Disconnect the skid control ECU connector.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A6-7 (STP) - Body ground |
Stop light switch assembly ON (Brake pedal depressed) |
11 to 14 V |
A6-7 (STP) - Body ground |
Stop light switch assembly OFF (Brake pedal released) |
Below 1.5 V |
*a |
Front view of wire harness connector (to Skid Control ECU) |
OK |
REPLACE MASTER CYLINDER SOLENOID |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (STP CIRCUIT) |
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE STEERING LOCK ACTUATOR ASSEMBLY
(a) Using a center punch, mark the center of the tapered-head bolt.
(b) Using a 3 to 4 mm (0.118 to 0.157 in.) drill, drill a hole in the 2 bolts.
(c) Using a screw extractor, remo ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL INDOOR NO. 2 ELECTRICAL KEY ANTENNA ASSEMBLY
(a) Attach the 2 claws to install the indoor No. 2 electrical key antenna.
(b) Connect the connector.
(c) Install the front ...