Indicator Circuit

SEAT: REAR POWER SEAT CONTROL SYSTEM: Indicator Circuit
- Indicator Circuit

DESCRIPTION

This system has two indicator lights. One of the indicator lights is built into the fold seat switch assembly. This indicator light receives power from the fold seat control ECU. It comes on or blinks when the system detects that an object is caught or when the seat operation conditions are not met.

The other indicator light is on the combination meter. This indicator light comes on when the reclining motor or fold seat control ECU is not initialized, any seat legs are released, or when the seatback is outside the reclining operation range.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Inspect the fuse for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK OPERATION OF INDICATOR LIGHT

(a) Check the indicator light operation.

Result





B -- CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY)
A -- Continue to next step.

2. INSPECT FOLD SEAT SWITCH ASSEMBLY

(a) Remove the fold seat switch assembly Removal.

(b) Apply battery voltage to the fold seat switch assembly and check that the indicator light comes on.





OK:





Text in Illustration





(c) Reinstall the fold seat switch assembly.

NG -- REPLACE FOLD SEAT SWITCH ASSEMBLY Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - FOLD SEAT SWITCH)

(a) Disconnect the b2 or a2 fold seat control ECU connector.

(b) Disconnect the K17 or K20 fold seat switch assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

LH Side





RH Side





(d) Reconnect the fold seat switch assembly connector.

(e) Reconnect the fold seat control ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (FOLD SEAT SWITCH - BACK DOOR COURTESY SWITCH)

(a) Disconnect the K17 or K20 fold seat switch assembly connector.

(b) Disconnect the W11 back door lock assembly (back door courtesy switch) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

LH Side





RH Side





(d) Reconnect the back door lock assembly (back door courtesy switch) connector.

(e) Reconnect the fold seat switch assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH)





Text in Illustration





(a) Remove the back door lock assembly Removal.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(c) Reinstall the back door lock assembly.

NG -- REPLACE BACK DOOR LOCK ASSEMBLY Removal
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (BACK DOOR COURTESY SWITCH - BODY GROUND)

(a) Disconnect the W11 back door lock assembly (back door courtesy switch) connector.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





(c) Reconnect the back door lock assembly (back door courtesy switch) connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Rear Power Seat Control System

7. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY)

(a) Disconnect the D18 combination meter assembly connector.





(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:





Text in Illustration





(c) Reconnect the combination meter assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

8. INSPECT COMBINATION METER ASSEMBLY (3RD SEAT INDICATOR LIGHT)

(a) Remove the combination meter assembly with its connector still connected Removal.





(b) Apply battery voltage to the combination meter assembly connector and check that the indicator light comes on.

OK:





Text in Illustration





(c) Reinstall the combination meter assembly.

NG -- REPLACE COMBINATION METER ASSEMBLY Removal
OK -- Continue to next step.

9. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FOLD SEAT CONTROL ECU)

(a) Disconnect the D18 combination meter assembly connector.

(b) Disconnect the b2 or a2 fold seat control ECU connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

LH Side





RH Side





(d) Reconnect the fold seat control ECU connector.

(e) Reconnect the combination meter assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Rear Power Seat Control System