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 PATTERN SELECT SWITCH ASSEMBLY - BODY GROUND .

Standard resistance

PATTERN SELECT SWITCH ASSEMBLY - BODY GROUND

Tester Connection	Specified Condition
3 - Body ground	Below 1 ohms

Fig 1: Checking Harness And Connector (Pattern Select Switch Assembly - Body Ground)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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 PATTERN SELECT SWITCH ASSEMBLY .

Standard resistance

PATTERN SELECT SWITCH ASSEMBLY

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

Fig 2: Inspecting Pattern Select Switch Assembly

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

PATTERN SELECT SWITCH ASSEMBLY - MAIN BODY ECU

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

Fig 3: Checking Harness And Connector (Pattern Select Switch Assembly - Main Body ECU)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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