Auto Repair 1998 Ford Pickup F150 Vehicle Does Not Shift Between 4Wd High To 4Wd

Auto Repair 1998 Ford Pickup F150 Vehicle Does Not Shift Between 4Wd High To 4Wd

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NOTE: Steps 1-3 pertain to power supply circuits. For applicable wiring diagrams, see POWER DISTRIBUTION section in SYSTEM WIRING DIAGRAMS article in the WIRING DIAGRAMS section. 1. Check Voltage At Fuse No. 15 (5-Amp) – Turn ignitionoff. Using voltmeter, measure voltage at terminal No. 1 on fuse junction panel fuse No. 15. If voltage is 10 volts or less, go to next step. If voltage is greater than 10 volts, go to step 4). 2. Check Fuse Junction Panel Fuse No. 15 (5-Amp) & Power Distribution Box Fuse No. 22 (50-Amp) – Inspect fuse junction panel fuse No. 15 (5-amp) and power distribution box fuse No. 22 (50-amp). If both fuses are okay, go to next step. If either fuse is blown, replace fuse. Clear DTCs and retest system. If fuse blows again, inspect circuit for short to ground. 3. Check Circuit 1052 (Tan/Black Wire) For Voltage – Disconnect fuse junctionpanel connector C243.

See Fig. 2 . Measure voltage between ground and terminal No. 11 on fuse junction panel harness connector. See Fig. 3 . If voltage is 10 volts or less, repair open Tan/Black wire. Clear DTCs and retest system. If voltage is greater than 10 volts, replace fuse junction panel. Clear DTCs and retest system. 4. Check Ignition States; Monitor GEM PID IGN_GEM – Turn ignitionoff. Connect NGS tester. Depress clutch pedal (if applicable). Monitor Generic Electronic Module (GEM) Parameter Identification (PID) Ignition Switch Status (IGN_GEM) while turning ignition switch through START, RUN, OFF and ACC positions. If values agree, go to next step. If values do not agree, see appropriate STEERING COLUMN SWITCHES article in the ACCESSORIES/SAFETY EQUIPMENT section. NOTE: In next step, if DTC B1342 is retrieved, replace GEM. Clear DTCs and retest system. 5. Retrieve DTCs – Retrieve and document continuous DTCs. Clear continuous DTCs. Retrieve on-demand DTCs. If DTCs are recorded, go to appropriate step(s). See DTC/TEST OR STEP table. If no DTCs are retrieved, go to next step. DTC/TEST OR STEP