Lexus ES: Motor Control Relay Stuck ON (Fr Shade) (B234A)
Lexus ES (XZ10) Service Manual / Vehicle Interior / Sliding Roof / Convertible / Panoramic Moon Roof System / Motor Control Relay Stuck ON (Fr Shade) (B234A)
DESCRIPTION
This DTC will be stored if the operation of the front roof sunshade is suspended and a pulse input of 10 Hz or more is detected when the motor relay is off.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B234A | Motor Control Relay Stuck ON (Fr Shade) | Position failure (When the roof sunshade ECU (sliding roof drive gear assembly) enters fail-safe mode due to a problem with the gear position) | Roof sunshade ECU (sliding roof drive gear assembly) |
CAUTION / NOTICE / HINT
NOTICE:
-
When the roof sunshade ECU (sliding roof drive gear assembly) is removed and reinstalled or replaced, the roof sunshade ECU (sliding roof drive gear assembly) must be initialized.
Click here
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- DTC B234A is stored in the roof sunshade ECU (sliding roof drive gear assembly).
PROCEDURE
| 1. | CHECK FOR DTC |
(a) Clear the DTCs.
Body Electrical > Sliding Roof > Clear DTCs(b) Check for DTCs.
Body Electrical > Sliding Roof > Trouble CodesOK:
DTC B234A is not output.
| OK | .gif) | USE SIMULATION METHOD TO CHECK |
| NG | | REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) |
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Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (a) Remove the bolt. Remove in this Direction (b) Disengage the claw and guide as shown in the illustration to remove the map light bracket. (c) Remove the 2 bolts and sliding roof drive gear sub-assembly.
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