DTC B1B89:44 [REAR POWER SEAT CONTROL MODULE (RH)]

id0902t3571600

Description

Incorrect seat position

Detection condition

•  Rear power seat control module (RH) detected any of the following conditions.

―  Seat position sensor (RH) related malfunction

―  Error in internal data memory for seat position detection

Fail-safe

•  Inhibits the rear power slide function from being driven.

•  Inhibits the rear power recliner function from being driven.

•  Inhibits the rear power walk-in operation slide function from being driven.

•  Inhibits the rear power walk-in return function from being driven.

Possible cause

•  Rear power seat control module (RH) detected any of the following conditions.

―  Seat position sensor (RH) input circuit malfunction (DTC B1B89:12, B1B89:13)

―  Seat position sensor (RH) power supply circuit malfunction (DTC B1D63:11)

•  Rear power seat control module (RH) malfunction

System wiring diagram

Not applicable

Description	Incorrect seat position
Detection condition	• Rear power seat control module (RH) detected any of the following conditions. ― Seat position sensor (RH) related malfunction ― Error in internal data memory for seat position detection
Fail-safe	• Inhibits the rear power slide function from being driven. • Inhibits the rear power recliner function from being driven. • Inhibits the rear power walk-in operation slide function from being driven. • Inhibits the rear power walk-in return function from being driven.
Possible cause	• Rear power seat control module (RH) detected any of the following conditions. ― Seat position sensor (RH) input circuit malfunction (DTC B1B89:12, B1B89:13) ― Seat position sensor (RH) power supply circuit malfunction (DTC B1D63:11) • Rear power seat control module (RH) malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY REAR POWER SEAT CONTROL MODULE (RH) DTCs

•  Retrieve the rear power seat control module (RH) DTCs using the M-MDS.
(See DTC INSPECTION [REAR POWER SEAT CONTROL MODULE (RH)].)

•  Are following DTCs present?

―  B1B89:12

―  B1B89:13

―  B1D63:11

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC B1B89:12 [REAR POWER SEAT CONTROL MODULE (RH)].)

(See DTC B1B89:13 [REAR POWER SEAT CONTROL MODULE (RH)].)

(See DTC B1D63:11 [REAR POWER SEAT CONTROL MODULE (RH)].)

No

Go to the next step.

2

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Clear the DTC for the rear power seat control module (RH) using the M-MDS.
(See CLEARING DTC [REAR POWER SEAT CONTROL MODULE (RH)].)

•  Retrieve the rear power seat control module (RH) DTCs using the M-MDS.
(See DTC INSPECTION [REAR POWER SEAT CONTROL MODULE (RH)].)

•  Is the same Pending DTC present?

Yes

Replace the second-row seat (RH), then go to the next step.

(See SECOND-ROW SEAT REMOVAL/INSTALLATION.)

No

Go to the next step.

3

VERIFY IF OTHER DTCs DISPLAYED

•  Are any other DTCs displayed?

Note

•  When this DTC is cleared from the rear power seat control module (RH), DTC B1B89:54 is displayed.

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [REAR POWER SEAT CONTROL MODULE (RH)].)

No

DTC troubleshooting completed.

Step	Inspection		Action
1	VERIFY REAR POWER SEAT CONTROL MODULE (RH) DTCs • Retrieve the rear power seat control module (RH) DTCs using the M-MDS. (See DTC INSPECTION [REAR POWER SEAT CONTROL MODULE (RH)].) • Are following DTCs present? ― B1B89:12 ― B1B89:13 ― B1D63:11	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC B1B89:12 [REAR POWER SEAT CONTROL MODULE (RH)].) (See DTC B1B89:13 [REAR POWER SEAT CONTROL MODULE (RH)].) (See DTC B1D63:11 [REAR POWER SEAT CONTROL MODULE (RH)].)
1		No	Go to the next step.
2	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Clear the DTC for the rear power seat control module (RH) using the M-MDS. (See CLEARING DTC [REAR POWER SEAT CONTROL MODULE (RH)].) • Retrieve the rear power seat control module (RH) DTCs using the M-MDS. (See DTC INSPECTION [REAR POWER SEAT CONTROL MODULE (RH)].) • Is the same Pending DTC present?	Yes	Replace the second-row seat (RH), then go to the next step. (See SECOND-ROW SEAT REMOVAL/INSTALLATION.)
2		No	Go to the next step.
3	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed? Note • When this DTC is cleared from the rear power seat control module (RH), DTC B1B89:54 is displayed.	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [REAR POWER SEAT CONTROL MODULE (RH)].)
3		No	DTC troubleshooting completed.