DESCRIPTION
This DTC is stored when the skid control ECU (brake actuator assembly) judges that an abnormality occurred in the circuit used to operate the pump motor.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
C1428 |
Motor Circuit Malfunction |
A malfunction occurs in the pump motor circuit. |
Pump motor circuit |
WIRING DIAGRAM
Refer to DTC C146C.
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CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (+BM TERMINAL) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector. |
|
(b) Disconnect the A42 skid control ECU (brake actuator assembly) connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-1 (+BM) - Body ground |
Always |
11 to 14 V |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (+BM CIRCUIT) |
|
2. |
CHECK HARNESS AND CONNECTOR (GND2 TERMINAL) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (GND2 CIRCUIT) |
|
3. |
RECONFIRM DTC |
(a) Reconnect the A42 skid control ECU (brake actuator assembly) connector.
(b) Clear the DTCs.
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(c) Turn the ignition switch off.
(d) Start the engine.
(e) Perform a road test.
(f) Check if the same DTC is output.
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Result |
Proceed to |
---|---|
DTC C1428 is not output. |
A |
DTC C1428 is output. |
B |
A | ![]() |
USE SIMULATION METHOD TO CHECK
|
B | ![]() |
REPLACE BRAKE ACTUATOR ASSEMBLY |
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