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DTC B1B89-13: Slide Motor And Position Sensor Circuit Malfunction: Notes

DTC B1B89:13 (Position Memory Control Module) DETECTION CONDITION AND POSSIBLE CAUSE

Description Slide Motor And Position Sensor Circuit Malfunction
Detection Condition
  • Position memory control module detects the following conditions during the slide motor operation control:
    • - Detects 4 times that current flowing to the slide motor is less than 1 A
    • - Detects for 0.2 s that there is no change in the slide sensor pulse
  • Position memory control module detects 4 times that current flowing to the lift motor exceeds 1 A.
Fail-safe
  • Memory clearing:
    • - If there is a malfunction in the slide position sensor, clear all the memory positions
  • Memory seat positioning using position memory switch and remote transmitter:
    • - If there is a malfunction in the slide position sensor, inhibits all memory seat positioning
    • - If there is a malfunction in the slide motor, inhibits slide motor seat positioning
  • Slide motor seat positioning using power seat switch:
    • - If there is a malfunction in the slide motor, inhibits slide motor seat positioning
  • Memory registration using position memory switch and remote transmitter:
    • - If there is a malfunction in the slide position sensor, inhibits the memory registration
    • - If there is a malfunction in the slide motor and the malfunction is caused by short circuit, inhibits the memory registration
Possible Cause
  • Slide motor and position sensor connector or terminal malfunction
  • Position memory control module connector or terminal malfunction
  • Short to ground in wiring harness between the following terminals:
    • - Position memory control module terminal 3A-Slide motor and position sensor terminal
    • - Position memory control module terminal 3B-Slide motor and position sensor terminal
    • - Position memory control module terminal 3I-Slide motor and position sensor terminal
    • - Position memory control module terminal 3J-Slide motor and position sensor terminal
  • Short to power supply in wiring harness between the following terminals:
    • - Position memory control module terminal 3A-Slide motor and position sensor terminal
    • - Position memory control module terminal 3B-Slide motor and position sensor terminal
    • - Position memory control module terminal 3I-Slide motor and position sensor terminal
    • - Position memory control module terminal 3J-Slide motor and position sensor terminal
  • Open circuit in wiring harness between the following terminals:
    • - Position memory control module terminal 3A-Slide motor and position sensor terminal
    • - Position memory control module terminal 3B-Slide motor and position sensor terminal
    • - Position memory control module terminal 3I-Slide motor and position sensor terminal
    • - Position memory control module terminal 3J-Slide motor and position sensor terminal
  • Front seat cushion frame/adjuster unit malfunction
    • - Slide motor and position sensor malfunctio
  • Position memory control module malfunction
Fig 1: Position Memory Control Module Circuit Diagram And Connector End View
G12183408Courtesy of MAZDA MOTORS CORP.
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