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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 471 (Rear Right Door Control System - Diagnosis) >> Circuit Inspection >> DTC B1235 Jam Protection Limit Switch Circuit on Rear Right Poor >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is output when failure of jam protection limit switch circuit is detected.

The jam protection limit switch is built in the power window motor.

This switch is OFF when the window stays between the fully closed position and 4 mm under the full-closed position, and each Door ECU reads this signal.

DTC CONDITION DETECTING CHART

DTC No. DTC Detecting Condition Trouble Area
B1235 No change is limit switch more than 2,0 seconds even if operating glass down when limit switch is OFF (window glass is fully closed)
  • Jam protection limit switch
  • Wireharness
  • Rear door RH ECU

HINT:

When the power window is operated UP or DOWN to detect the 30 cycle or more of the ON-OFF pulse, this DTC is cleared.