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Pattern Select Switch Power Mode Circuit: Procedure

  1. INSPECT NO. 1 PATTERN SELECT SWITCH ASSEMBLY (PWR) 
    1. Remove the No. 1 pattern select switch assembly. Refer to REMOVAL .
      Fig 1: Identifying Pattern Select Switch Connector Terminals
      GTY138241Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

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

    NG → See step   5 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (NO. 1 PATTERN SELECT SWITCH ASSEMBLY - BODY GROUND) 
    1. Disconnect the V5 No. 1 pattern select switch assembly connector.
      Fig 2: Identifying Pattern Select Switch Connector Terminal (E)
      GTY149107Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      V5-3 (E) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (NO. 1 PATTERN SELECT SWITCH ASSEMBLY - ECM) 
    Fig 3: Identifying A38 Connector Terminals
    GTY127485Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A38 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A38-51 (PWR) - Body ground Pattern select switch (PWR) on Below 1 Ω
      A38-51 (PWR) - Body ground Pattern select switch (PWR) off 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   4 

  4. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
  5. REPLACE NO. 1 PATTERN SELECT SWITCH ASSEMBLY. Refer to  REMOVAL