TSRM/MK3 Supra/Repair Manual
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BR/Brake System — Diagnostic Code, page 53

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p.054
Diagnostic Code — MK3 Supra Brake System, page 53
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Page text (OCR transcript)
BRAKE SYSTEM — Anti-lock Brake System (A.B.S.)                                BR-53

DIAGNOSTIC CODE

Code No. | Light Pattern | Diagnosis | Trouble Area

11 | ON OFF | Open circuit in solenoid relay | • Actuator (inside wire check)
   |        |                              | • Wire harness and connector of actuator and ECU

12 | ┌┐┌┐ | Short circuit in solenoid relay | • Wire harness and connector of actuator and ECU
   |      |                                 | • Actuator (solenoid relay)

13 | ┌┐┌┐┌┐ | Open circuit in pump motor relay | • Actuator (solenoid wire check)
   |        |                                   | • Wire harness and connector of pump motor and ECU

14 | ┌┐┌┐┌┐┌┐ | Short circuit in pump motor relay | • Wire harness and connector of pump motor and ECU
   |          |                                     | • Actuator (pump motor relay)

21 | ┌ ┐ | Open or short circuit in RH position solenoid of front wheel | • Actuator (solenoid check)
   |     |                                                              | • Wire harness and connector of actuator and ECU

22 | ┌ ┐┌ ┐ | Open or short circuit in LH position solenoid of front wheel | • Actuator (solenoid check)
   |        |                                                              | • Wire harness and connector of actuator and ECU

23 | ┌ ┐┌ ┐┌ ┐ | Open or short circuit in RH position solenoid of rear wheel | • Actuator (solenoid check)
   |            |                                                              |

31 | ┌  ┐ | Right front wheel speed sensor signal malfunction | • Speed sensor
   |      |                                                   | • Sensor rotor

32 | ┌  ┐┌  ┐ | Left front wheel speed sensor signal malfunction | • Wire harness and connector of speed sensor
   |          |                                                   | • Sensor rotor

33 | ┌  ┐┌  ┐┌  ┐ | Rear wheel speed sensor signal malfunction | • Wire harness and connector of speed sensor
   |              |                                             |

34 | ┌   ┐┌   ┐ | One circuit in front speed sensor | • Speed sensor
   |            |                                   |

41 | ┌    ┐ | Low battery voltage (9.5 V or lower) | • Battery
   |        |                                      | • Voltage regulator

42 | ┌    ┐┌    ┐ | Abnormally high battery voltage (17.2 V or higher) | • Pump motor duty and battery
   |              |                                                      | • Voltage regulator

51 | ┌     ┐ | Pump motor of actuator (block to open circuit in pump | • Pump motor duty and battery
   |         | motor circuit of actuator)                             | • Motor circuit of actuator
   |         |                                                            | • Kind of actuator error control circuit

Always on | ┐ | Malfunction in computer | • Computer