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Fig. 135: Changing 4WD Control Switch From 2WD To 4H If there is a malfunction, inspect the switch, ECU, transfer shift actuator and A.D.D. actuator. b. 4LO Indicator Light: 1. Turn the ignition switch ON. 2. Change the 4WD control switch from 2WD to 4H. Then change it from 4H to 4L after the 4HI indicator light illuminates (after 4H switch completion). 3. Check the 4LO indicator light. OK 4LO INDICATOR LIGHT SPECIFIED CONDITION CHART If there is a malfunction, inspect the switch, ECU and actuator. If the system is normal, the 2. INSPECT FUSE (4WD) a. Remove the 4WD fuse from the main body ECU. b. Measure the resistance according to the value(s) in the table below. 2WD to 4H 4HI indicator light comes on or 4HI indicator light comes on after it is Switch Condition Specified Condition After 2WD to 4WD HIGH switch 4LO indicator light comes on or 4LO indicator light
2009 Toyota Tundra 2009 TRANSMISSION JF1A Transfer - Tundra
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