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MODE 4HI INDICATOR LIGHT 4LO INDICATOR LIGHT WARNING BUZZER 4L Not illuminated Illuminated Not sounding Switching from 4L to 2WD Blinking Illuminated Not sounding 4L to 2WD switch request (not permitted) Blinking Illuminated Sounding Switching from 4L to 4H Blinking Illuminated Not sounding Malfunctioning Rapidly blinking Rapidly blinking Not sounding Blinking: Blinks at 0.5 second intervals (0.5 seconds on and 0.5 seconds off) Rapidly blinking: Blinks at 0.25 second intervals (0.25 seconds on and 0.25 seconds off) 4. FUNCTION OF COMPONENTS COMPONENTS FUNCTIONS Transfer position switch Allows switching between the 3 drive modes: 2WD, 4HI and 4LO. Combination meter assembly 4HI indicator light light buzzer Skid control ECU Outputs wheel speed signals to the 4 wheel drive control ECU via CAN communication. Speed sensors ECM Outputs information such as the shift lever position and engine speed to the 4 wheel drive control ECU via CAN communication. Park/neutral position switch Detects the shift lever position and sends that information to the ECM. 4 wheel drive control ECU Determines the vehicle status from wheel and engine speed signals operating the transfer shift actuator assembly. Transfer shift actuator assembly Operates the transfer shift motor according to commands sent from the 4 wheel drive control ECU and switches to 4WD mode. Transfer indicator switch Detects the 2WD, 4HI and 4LO positions and sends that information to the 4 wheel drive control ECU. A.D.D. actuator (differential vacuum actuator assembly) A.D.D. shift motor and limit switch Operates the A.D.D. shift motor according to commands sent from the 4 wheel drive control ECU and switches between 2WD and 4WD. A.D.D. detection switch Detects the 2WD and 4WD A.D.D. positions and sends that information to the 4 wheel drive control ECU. WF1AM TRANSFER: TOUCH SELECT 2-4 AND HIGH-LOW SYS... |