Toyota Corolla Repair Manual: Inspection procedure
Hint
: start the inspection from step 1 in case of using the hand–held tester and start from step 2 in case of not using hand–held tester.
1 Inspect brake actuator assy
- Select the datalist mode on the hand–held tester.
- check the operation sound of the abs pump motor when operating it
with the hand–held tester.
Ok: the operation sound of the abs pump motor should be heard.
2 Inspect skid control ecu terminal voltage(+bm terminal voltage)
- Disconnect the skid control ecu connector.
- measure the voltage between terminal +bm (24) and
gnd (23) of skid control ecu harness side connector.
Ok: the operation sound of the abs pump motor should be heard.
Replace brake actuator assy
Circuit description
Wiring diagram
...
Malfunction in abs ecu
Dtc alwayson malfunction in abs ecu ...
Other materials:
Check short circuit
If the wire harness is ground shorted as shown in fig. 5,
Locate the section by conducting a resistance check with
the body ground in step (b).
Check the resistance with the body ground.
Disconnect connectors a and c and measure the
resistance between terminals 1 and 2 ...
Problem symptoms table
If a normal code is displayed during the dtc check but the problem still
occurs, check the circuits for each
problem symptom in the order given in the table below and proceed to the
relevant troubleshooting page.
Notice:
when replacing skid control ecu, sensor or etc., Turn the ignition swi ...
How to proceed with troubleshooting
1 Vehicle brought to workshop
2 Customer problem analysis
3 Check and clear dtcs and freeze frame data
4 Problem symptom confirmation
Symptom does not occur: go to
step 5
Symptom occurs: go to step 6
5 Symptom simulation
6 Dtc check
There is no
output: go to step 7
There is outp ...