DESCRIPTION
The skid control ECU is connected to the combination meter via CAN communication.
If any of the following is detected, the ABS warning light remains on:
HINT:
In some cases, the Techstream cannot be used when the skid control ECU is abnormal.
WIRING DIAGRAM
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if a CAN communication system DTC is output (See page
).
Result |
Proceed to |
---|---|
DTC is not output |
A |
DTC is output |
B |
B | ![]() |
INSPECT CAN COMMUNICATION SYSTEM |
|
2. |
CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED |
(a) Check if the skid control ECU connector is securely connected.
OK:
The connector is securely connected.
NG | ![]() |
CONNECT CONNECTOR TO ECU CORRECTLY |
|
3. |
CHECK BATTERY |
(a) Check the battery voltage.
Standard Voltage:
11 to 14 V
Result |
Proceed to |
---|---|
OK |
A |
NG (for 2GR-FE) |
B |
NG (for 1AR-FE) |
C |
B | ![]() |
CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 2GR-FE) |
C | ![]() |
CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 1AR-FE) |
|
4. |
INSPECT SKID CONTROL ECU (IG1 TERMINAL) |
(a) Disconnect the skid control ECU connector. |
|
(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 |
---|---|---|
A42-28 (IG1) - Body ground |
Ignition switch ON |
11 to 14 V |
*1 |
Front view of wire harness connector (to Brake Actuator (Skid Control ECU)) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) |
|
5. |
INSPECT SKID CONTROL ECU (GND1 TERMINAL) |
(a) Turn the ignition switch off. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-4 (GND1) - Body ground |
Always |
Below 1 Ω |
*1 |
Front view of wire harness connector (to Brake Actuator (Skid Control ECU)) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (GND1 CIRCUIT) |
|
6. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Reconnect the skid control ECU connector.
(b) Perform the Active Test of the combination meter (meter CPU) using the Techstream
(See page ).
(c) Check the combination meter.
OK:
The ABS warning light turns on or off in accordance with the Techstream operation.
HINT:
If troubleshooting has been carried out according to Problem Symptoms Table,
refer back to the table and proceed to the next step before replacing the part (See
page ).
OK | ![]() |
REPLACE BRAKE ACTUATOR ASSEMBLY |
NG | ![]() |
REPLACE COMBINATION METER ASSEMBLY |
Inspection
INSPECTION
PROCEDURE
1. INSPECT PAD LINING THICKNESS
(a) Using a ruler, measure the pad lining thickness.
Text in Illustration
*1
Ruler
Standard thickness of a new pad:
12.0 mm (0.472 ...
Headlight Signal Circuit
DESCRIPTION
The headlight leveling ECU assembly detects the low beam headlights status.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
First check that the low beam headlights operate normally.
PROCEDURE
1.
CHECK HARNESS AND CON ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK TRANSPONDER KEY AMPLIFIER
(a) Disconnect the D21 transponder key amplifier connector.
(b) Measure the resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with connector dis ...