Pattern Select Switch Power Mode Circuit: Procedure

CHECK WIRE HARNESS (PATTERN SELECT SWITCH - BODY GROUND)

Fig 1: Identifying E11 Pattern Select Switch Connector Terminals

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Measure the resistance of the wire harness side connector.

Standard resistance

Tester Connection	Specified Condition
E11-3 (E) - Body ground	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

INSPECT PATTERN SELECT SWITCH

Measure the resistance of the switch.

Fig 2: Identifying E3 And P7 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

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

NG → See step 5

OK: Go to next step

CHECK WIRE HARNESS (PASSENGER SIDE JUNCTION BLOCK ECU - PATTERN SELECT SWITCH)

Fig 3: Identifying P4 Passenger Side Junction Block Connector Terminals

Measure the resistance of the passenger side junction block ECU.

Standard resistance

Tester Connection	Switch Condition	Specified Condition
P4-18 (PWR) - Body ground	Pattern select switch (PWR)	Below 1 Ω
P4-18 (PWR) - Body ground	Pattern select switch (NORM)	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR

OK → See step 4

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
REPLACE PATTERN SELECT SWITCH. Refer to REMOVAL