DESCRIPTION
The ABS motor relay supplies power to the ABS pump motor. While the ABS is activated, the ECU turns the motor relay on and operates the ABS pump motor.
If the voltage supplied to the motor relay (+BM) is below the DTCs detection threshold due to low voltage from the battery/alternator, the DTCs may be stored.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT: After steps 1, 2 and 3 are completed, start the inspection from step 4 when using the intelligent tester, and from step 5 when not using the intelligent tester.
1 INSPECT FUSE (ABS 1 FUSE)
(a) Remove the ABS 1 fuse from the FL block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance
2 INSPECT SKID CONTROL ECU (+BM TERMINAL VOLTAGE)
(a) Install the ABS 1 fuse.
(b) Disconnect the skid control ECU connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage
3 INSPECT SKID CONTROL ECU (GND TERMINAL CONTINUITY)
(a) Measure the resistance according to the value(s) in the table below.
Standard resistance
4 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (ABS MOTOR RELAY)
(a) Reconnect the skid control ECU connector.
(b) Connect the intelligent tester to the DLC3.
(c) Turn the ignition switch to the ON position and turn the intelligent tester main switch on.
(d) Start the engine.
(e) Select the ACTIVE TEST mode on the intelligent tester.
ABS:
(f) Check operating sound of the ABS motor when operating it with the intelligent tester.
OK: The operating sound of the ABS motor is heard.
5 RECONFIRM DTC
(a) Clear the DTCs (See page BC-10).
(b) Start the engine.
(c) Drive the vehicle at the speed of 6 km/h (4 mph) or more.
(d) Check that the same DTCs are recorded (See page BC- 10).
HINT:
Result
HINT:
REPLACE BRAKE ACTUATOR ASSEMBLY
Disassembly
HINT:
On the RH side, use the same procedures as on the LH side.
1. REMOVE FRONT DOOR LOWER FRAME BRACKET GARNISH LH
Using a screwdriver, disengage the clip and claw,
and remove the garnish.
HINT:
Tape the screwdriver tip before use.
2. REMOVE FRONT DOOR INSIDE HANDLE BEZEL PLUG LH
...
Diagnosis system
1. DESCRIPTION
When troubleshooting a vehicle with the diagnosis
system, the only difference from the usual
troubleshooting procedure is connecting the intelligent
tester to the vehicle and reading various data output from
the vehicle's clearance warning ECU.
The clearance warning ECU record ...
Communication Error from Distance Control
ECU to ECM
DTC P1615 Communication Error from Distance Control
ECU to ECM
DTC U1101 Lost Communication with Distance Control
ECU
DESCRIPTION
The distance control ECU receives information about the area in front of the
vehicle from the laser sensor
and then sends a brake control demand signal (decelerat ...