DTC C1249/49 Open in Stop Light Switch Circuit
DESCRIPTION
This skid control ECU inputs the stop light switch signal and detects the status of brake operation.
The skid control ECU has an open detection circuit. If an open in the stop light switch input line or GND side stop light circuit is detected when the stop light switch is off, this DTC is output.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK STOP LIGHT SWITCH OPERATION
(a) Check that the stop light comes on when the brake pedal is depressed, and goes off when the brake pedal is released.
OK: Stop light switch function is normal.
HINT: Check the stop light bulb as it may have burnt out.
2 INSPECT SKID CONTROL ECU (STP TERMINAL VOLTAGE)
(a) Disconnect the skid control ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage
Result
3 RECONFIRM DTC
(a) Clear the DTC (See page BC-10).
(b) Check that the same DTC is recorded (See page BC- 10).
HINT: Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.
Result
REPLACE BRAKE ACTUATOR ASSEMBLY
4 INSPECT STOP LIGHT SWITCH (POWER SOURCE TERMINAL VOLTAGE)
(a) Disconnect the stop light switch connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage
5 INSPECT STOP LIGHT SWITCH
(a) Measure the resistance according to the value(s) in the table below.
Standard resistance
6 CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTROL ECU AND STOP LIGHT SWITCH)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance
HINT:
REPLACE BRAKE ACTUATOR ASSEMBLY
ACC Power Source Circuit
DESCRIPTION
This circuit supplies power to the A/C amplifier and the illumination for the
clock.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FUSE (ECU ACC)
(a) Remove the ECU ACC fuse from the engine room relay
block.
(b) Measure the resistance according to the value(s) in the
tab ...
Throttle Actuator Control System
DESCRIPTION
The throttle actuator is operated by the ECM, and opens and closes the
throttle valve using the gears.
The opening angle of the throttle valve is detected by the Throttle Position
(TP) sensor, which is mounted
on the throttle body. The TP sensor provides feedback to the ECM ...
On-vehicle inspection
1. INSPECT BRAKE PEDAL HEIGHT
(a) Check the brake pedal height.
Pedal height from dash panel:
150.3 to 160.3 mm (5.917 to 6.311 in.)
NOTICE:
Do not adjust the pedal height. Doing so by
changing the push rod length will structurally
change the pedal ratio.
2. CHECK AND ADJUST STOP LIGHT S ...