Inspection Procedure

CHECK HARNESS AND CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - BODY GROUND)

Disconnect the connector of pattern select switch.
Measure the resistance according to the value(s) in the table below.
Standard resistance

STANDARD RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
3 - Body ground	Below 1 Ω

Fig 1: Identifying J36 Pattern Select Switch Connector

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

INSPECT PATTERN SELECT SWITCH ASSEMBLY

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

STANDARD RESISTANCE SPECIFICATION

Switch Condition	Tester Connection	Specified Condition
Pattern select switch (PWR)	3 - 7	Below 1 Ω
Pattern select switch (NORM)	↑	10 kΩ or higher

Fig 2: Identifying J36 Pattern Select Switch Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE PATTERN SELECT SWITCH ASSEMBLY

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - MAIN BODY ECU)

Connect the connector of pattern select switch.
Disconnect the cowl side junction block (main body ECU RH) connector.
Measure the resistance between terminal PWR of the cowl side junction block (main body ECU RH) and body ground.
Standard resistance

STANDARD RESISTANCE SPECIFICATION

Switch Condition	Tester Connection	Specified Condition
Pattern select switch (PWR)	J75-18 (PWR) - Body ground	Below 1 Ω
Pattern select switch (NORM)	↑	10 kΩ or higher

Fig 3: Identifying J75 Main Body ECU RH Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE