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Check Pattern Select Switch

PREPARATION: 

Disconnect the pattern select switch connector.

CHECK: 

Check continuity between each terminal of pattern select switch connector when the select switch is set to PWR, NORM and SNOW positions.

OK: 

SWITCH CONDITION SPECIFIED CONDITION CHART

Switch condition Tester connection Specified condition
PWR 3 - 7 Continuity
NORM 1 - 3, 3 - 7 No continuity
SNOW 1 - 3 Continuity
Fig 1: Checking Continuity Between Each Terminal Of Pattern Select Switch Connector
G03632475Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the continuity is not as specified, replace the switch.

  1. NG: Replace pattern select switch. 
  2. OK: Go  CHECK HARNESS AND CONNECTOR BETWEEN PATTERN SELECT SWITCH AND BODY ECU NO. 1, PATTERN SELECT SWITCH AND BODY GROUND   .