Inspection Procedure

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

   Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   3 - Body ground	Below 1 Ω

Fig 1: Identifying Pattern Select Switch Connector Terminals

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   Resistance 

   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 Pattern Select Switch Connector Terminals

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NG: REPLACE PATTERN SELECT SWITCH ASSEMBLY 

OK: Go to next step 

1. Connect the connector of pattern select switch.
2. Disconnect the cowl side junction block (multiplex network body ECU) connector.
3. Measure the resistance between terminal PWR of the cowl side junction block (multiplex network body ECU) and body ground.

   Resistance 

   RESISTANCE SPECIFICATION
   
   

   Switch Condition	Tester Connection	Specified Condition
   Pattern select switch (PWR)	K68 - 18 (PWR) - Body ground	Below 1 Ω
   Pattern select switch (NORM)	↑	10 kΩ or higher

Fig 3: Disconnecting Cowl Side Junction Block (Multiplex Network Body ECU) Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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