4x4 is not working

[devilishf150]

Hey everyone, Im new to the forums.. I have owned several f150's but I have never came across this issue. When I turn the switch on to 4high nothing happens part of the time.. And the other time there is a clicking in the dash somewhere.. Same kind of ticking like a "flasher relay" would make if it was bad. Lights do not come on either and again it does not engage.. All help is greatly appreciated..

 

[devilishf150]

Sorry.. Its a 1997 f150 4.6 vin:w 4x4 xlt

 

[lil_dq]

Man, push button...YUCK! LOL Good luck with it. I would say it would be a switch or vaccum leak somewhere, but I am not positive.

 

[blacksnapon]

got any GEM codes?

GEM Diagnostic Trouble Code (DTC) Chart — Electronic Shift on the Fly (ESOF)
GEM Diagnostic Trouble Code (DTC) Chart DTC Circuit Description Test Mode
B1342 N/A GEM Defective On-Demand, Continuous
B1355 1040 (R/LB) Ignition RUN Circuit Open or Short to Ground On-Demand
B1359 297 (BK/LB) Ignition RUN/ACC Circuit Open or Short to Ground On-Demand, Continuous
B1365 32 (R/LB) Ignition START Circuit Short to Battery On-Demand, Continuous
P0500 676 (PK/O)
679 (GY/BK) Vehicle Speed Signal Not Detected Continuous
B1483 511 (LG) Brake Pedal Input Circuit Open or Short to Ground Continuous
B1485 511 (LG) Brake Pedal Input Short to Battery On-Demand, Continuous
P1804 210 (LB) 4WD High Indicator Circuit Open or Short to Ground On-Demand, Continuous
P1806 210 (LB) 4WD High Indicator Short to Battery On-Demand, Continuous
P1808 975 (BR/Y) 4WD Low Indicator Circuit Open or Short to Ground On-Demand, Continuous
P1810 975 (BR/Y) 4WD Low Indicator Short to Battery On-Demand, Continuous
P1812 780 (DB)
682 (DB) 4WD Mode Select Switch Circuit Open On-Demand, Continuous
P1815 783 (G) 4WD Mode Select Switch Circuit Short to Ground On-Demand, Continuous
P1819 483 (R/W) Neutral Safety Switch Input Short to Ground On-Demand
P1820 782 (BR/W) Transfer Case LO to HI Shift Relay Coil Circuit Open or Short to Ground On-Demand, Continuous
P1822 782 (BR/W) Transfer Case LO to HI Shift Relay Coil Short to Battery Continuous
P1824 779 (BR) 4WD Electric Clutch Relay Circuit Open or Short to Ground On-Demand, Continuous
P1826 779 (BR) 4WD Electric Clutch Relay Short to Battery Continuous
P1828 781 (O/LB) Transfer Case HI to LO Shift Relay Coil Circuit Open or Short to Ground On-Demand, Continuous
P1830 781 (O/LB) Transfer Case HI to LO Shift Relay Coil Short to Battery Continuous
P1832 605 (R) Transfer Case 4WD Solenoid Circuit Open or Short to Ground Continuous
P1834 605 (R) Transfer Case 4WD Solenoid Short to Battery On-Demand, Continuous
P1838 GEM activate shift motor relays and no movement of the shift motor was detected from the contact plate inputs. Continuous
P1846 771(P/Y) Transfer Case CONTACT PLATE "A" Circuit Open Continuous
P1850 770 (W) Transfer Case CONTACT PLATE "B" Circuit Open Continuous
P1854 764 (BR/W) Transfer Case CONTACT PLATE "C" Circuit Open Continuous
P1858 763 (O/W) Transfer Case CONTACT PLATE "D" Circuit Open Continuous
P1866 INTERNAL TO TRANSFER
CASE NOTE: If this DTC is stored, the transfer case cannot be shifted until the DTC is cleared and the ignition switch is cycled. Repair any other DTCs retrieved first and re-test.

Transfer Case System Concern, Repair Required.
GEM activate shift motor relays and no movement of the shift motor was detected from the contact plate inputs. Continuous
P1867 INTERNAL TO TRANSFER CASE Transfer Case CONTACT PLATE — General Circuit Failure (One or more plates open or short to ground). Continuous
P1876 145 (GY/BK) Transfer Case 2WD Solenoid Circuit Open or Short to Ground On-Demand, Continuous
P1877 145 (GY/BK) Transfer Case 2WD Solenoid Short to Battery On-Demand, Continuous
P1891 762 (Y/W) Transfer Case CONTACT PLATE Ground Return Open Circuit On-Demand, Continuous

 

[devilishf150]

Check engine light isnt on, so does that mean no codes?

 

[blacksnapon]

Check engine light isnt on, so does that mean no codes?

GEM module wont set a light. You'll need a high end code reader to get them.

 

[devilishf150]

A shop will be able to do this, right?

 

[5.0Flareside]

gonna guess vacuum leak. but would put on a scanner to check codes.