- Stop light control relay
- Stop light control circuit
- VSC actuator (skid control ECU)
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Brake | Section: Brake Control/Dynamic Control System | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000001P4P005X |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
C1311/12 |
Open or Short in Brake Inhibit Relay Circuit |
DESCRIPTION
The stop light control relays are built into the stop light circuit and prohibits the stop light from turning on under VSC control.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1311/12 |
Open or short circuit is detected. |
|
WIRING DIAGRAM
Refer to DTC C1249/49
.
INSPECTION PROCEDURE
NOTICE:
When replacing the VSC actuator assembly, perform the zero point calibration
.
PROCEDURE
|
1. |
CHECK TERMINAL VOLTAGE (STOP LIGHT CONTROL RELAY) |
|
(a) Remove the stop light control relays from the engine room relay block. |
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
Stop light control relay terminal 1 (BRK NO. 1) - Body ground |
Ignition switch ON |
11 to 14 V |
|
Stop light control relay terminal 1 (BRK NO. 2) - Body ground |
|
|
2. |
INSPECT STOP LIGHT CONTROL RELAY (BRK NO. 1, BRK NO. 2) |
(a) Remove the stop light control relays (BRK NO. 1 and BRK NO. 2) from the engine room relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for BRK NO. 1
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
3 - 4 |
When battery voltage is not applied to terminals 1 and 2 |
Below 1 Ω |
|
3 - 5 |
When battery voltage is not applied to terminals 1 and 2 |
10 kΩ or higher |
|
3 - 4 |
When battery voltage is applied to terminals 1 and 2 |
10 kΩ or higher |
|
3 - 5 |
When battery voltage is applied to terminals 1 and 2 |
Below 1 Ω |
for BRK NO. 2
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
3 - 4 |
When battery voltage is not applied to terminals 1 and 2 |
Below 1 Ω |
|
When battery voltage is applied to terminals 1 and 2 |
10 kΩ or higher |
|
|
3. |
CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK - SKID CONTROL ECU) |
|
(a) Disconnect the A19 ECU connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
A19-35 (BSW) - Body ground |
Ignition switch ON |
11 to 14 V |
|
|
|