Inspection Procedure

NOTE: When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - REAR POWER SEAT MODULE SWITCH)

Disconnect the L76 amplifier connector.
Disconnect the R2*1 or S15*2 module switch connector.
HINT:

*1: w/o Ottoman

*2: w/ Ottoman
Measure the resistance and voltage according to the value(s) in the table below.

Fig 1: Identifying Terminals Of L76 Amplifier & R2*1 Or S15*2 Module Switch Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

w/o Ottoman:

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
L76-21 (LIN3) - R2-14 (RCLN)	Always	Below 1 Ω
L76-21 (LIN3) or 1-2-14 (RCLN) - Body ground	Always	10 kΩ or higher

w/ Ottoman:

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
L76-21 (LIN3) - S15-13 (RCLN)	Always	Below 1 Ω
L76-21 (LIN3) or S15-13 (RCLN) - Body ground	Always	10 kΩ or higher

Standard voltage

w/o Ottoman:

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
L76-21 (LIN3) or R2-14 (RCLN) - Body ground	Always	Below 1 V

w/ Ottoman:

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
L76-21 (LIN3) or S15-13 (RCLN) - Body ground	Always	Below 1 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK REAR POWER SEAT MODULE SWITCH (BATTERY VOLTAGE AND GROUND)

Disconnect the R2*1 or S15*2 module switch connector.
HINT:

*1: w/o Ottoman

*2: w/ Ottoman
Measure the resistance and voltage according to the value(s) in the table below.

Standard resistance

w/o Ottoman:

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
R2-3 (E) - Body ground	Always	Below 1 Ω

w/ Ottoman:

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
S15-5 (E) - Body ground	Always	Below 1 Ω

Fig 2: Identifying Terminals Of R2*1 Or S15*2 Module Switch Connector

Standard voltage

w/o Ottoman:

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
R2-11 (B) - Body ground	Always	11 to 14 V

w/ Ottoman:

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
S15-6 (B) - Body ground	Always	11 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

REPLACE REAR POWER SEAT MODULE SWITCH (OPERATION)
1. Temporarily replace the rear power seat module switch with a new or normally functioning one (see DISASSEMBLY ).
2. Check the rear air conditioning function is normal.
  OK: Rear air conditioning function is normal.
NG: REPLACE AIR CONDITIONING AMPLIFIER

OK: END (REAR POWER SEAT MODULE SWITCH IS DEFECTIVE)