Inspection Procedure

INSPECT FUSE (P S/HTR)
1. Remove the P S/HTR fuse from the driver side J/B.
2. Measure the resistance of the relay.
Standard: Below 1 Ω

NG: REPLACE FUSE

OK: Go to next step

CHECK WIRE HARNESS (SEAT CLIMATE CONTROL BLOWER (CLIMATE CONTROL ECU) - BATTERY)

Disconnect the C21 blower connector.
Measure the voltage of the wire harness side connector.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
C21-7 (IG) - Body ground	Ignition switch ON	10 to 14 V

Fig 1: Identifying Seat Climate Control Blower Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

CHECK WIRE HARNESS (CLIMATE CONTROL BLOWER (CLIMATE CONTROL ECU) - BODY GROUND)

Disconnect the C21 blower connector.
Measure the resistance of the wire harness side connector.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
C20-8 (E) - Body ground	Below 1 Ω

Fig 2: Identifying Seat Climate Control Blower Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE SEAT CLIMATE CONTROL BLOWER (CLIMATE CONTROL ECU)

CHECK WIRE HARNESS (PASSENGER SIDE J/B - BATTERY)

Disconnect the PJ J/B connector.
Measure the voltage of the J/B connector.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
PJ-9 - Body ground	Ignition switch ON	10 to 14 V

Fig 3: Identifying PJ Passenger Side J/B Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 5

OK: REPAIR OR REPLACE HARNESS AND CONNECTOR (PASSENGER SIDE J/B - CLIMATE CONTROL BLOWER (CLIMATE CONTROL ECU))

CHECK WIRE HARNESS (PASSENGER SIDE J/B - BODY GROUND

Disconnect the PA and PE J/B connectors.
Measure the voltage of the wire harness side connectors.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
PA-1 - Body ground	Always	10 to 14 V
PE-6 - Body ground	Ignition switch ON	10 to 14 V

Fig 4: Identifying PA And PE Passenger Side J/B Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

CHECK WIRE HARNESS (PASSENGER SIDE J/B - BODY GROUND)

Disconnect the PG J/B connector.
Measure the resistance of the wire harness side connector.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
PG-8 - Body ground	Below 1 Ω

Fig 5: Identifying PG Passenger Side J/B Connector Terminals

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

INSPECT RELAY (Marking: P-IG1)

Remove the P-IG1 relay from the passenger side J/B.
Measure the resistance of the relay.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
3 - 5	10 kΩ or higher
3 - 5	Below 1 Ω (when battery voltage is applied to terminal 1 and 2)

Fig 6: Identifying P-IG1 Relay Terminals And Circuit

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE DRIVER SIDE JUNCTION BLOCK