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Last Modified: 9-16-2014 6.6 C Doc ID: RM000005KPY001X Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: WF1AM TRANSFER: TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM: P17A4; Automatic Disconnecting Differential Motor Limit Switch Circuit; 2015 MY Tundra [08/2014 - ] DTC P17A4 Automatic Disconnecting Differential Motor Limit Switch Circuit DESCRIPTION TERMINAL IN 2WD SWITCHING BETWEEN 2WD AND 4WD IN 4WD DL1 OFF (OPEN) ON (GND) ON (GND) DL2 ON (GND) ON (GND) OFF (OPEN) This DTC is detected when the limit switch ON/OFF combination (2 lines) is abnormal. DTC CODE DTC DETECTION CONDITION DIAGNOSIS CONDITION 1. MALFUNCTION STATUS 2. MALFUNCTION TIME 3. OTHER 4. TROUBLE AREA P17A4 Ignition switch is ON and engine is running 1. Limit switch DL1 terminal is OFF (OPEN) and the DL2 terminal is OFF (OPEN) 2. 1 second or more 3. 1 trip detection logic 4. Wire harness and connector 4 wheel drive control ECU A.D.D. actuator (differential vacuum actuator assembly) WIRING DIAGRAM WF1AM TRANSFER: TOUCH SELECT 2-4 AND HIGH-LOW SYS... |