DESCRIPTION
Connecting terminals TC and CG of the DLC3 causes the ECU to display DTCs by blinking the ABS warning and slip indicator lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information.
Before replacing the ECM, refer to Service Bulletin.
Tech Tips
When the indicator lights continue to blink, a short to ground in the wiring of terminal TC of the DLC3 or an internal short to ground in one or more ECUs is suspected.
PROCEDURE
CHECK CAN COMMUNICATION SYSTEM
Check if CAN communication system DTCs are output.
Result | ||||||
---|---|---|---|---|---|---|
|
B |
INSPECT CAN COMMUNICATION SYSTEM Click here |
A |
INSPECT DLC3
*a | Front view of DLC3 |
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM) Click here |
OK |
REPLACE ECM
*a | Front view of DLC3 |
Turn the engine switch off.
Replace the ECM.
for 2GR-FSE: Click here
for 8AR-FTS: Click here
Using SST, connect terminals TC and CG of the DLC3.
Check that the ABS warning and slip indicator lights are blinking.
OK |
---|
The ABS warning and slip indicator lights are blinking. |
Tech Tips
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts.
Result | |||
---|---|---|---|
|
OK |
END |
NG |
REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here |
CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)
Turn the engine switch off.
Disconnect the A71 or A91 ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
|||||||||
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)
*a | Front view of DLC3 |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
REPLACE ECM
*a | Front view of DLC3 |
Replace the ECM.
for 2GR-FSE: Click here
for 8AR-FTS: Click here
Using SST, connect terminals TC and CG of the DLC3.
Check that the ABS warning and slip indicator lights are blinking.
OK |
---|
The ABS warning and slip indicator lights are blinking. |
Tech Tips
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts.
Result | |||
---|---|---|---|
|
OK |
END |
NG |
REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here |