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1. Check wiring at C151, pins F and G, Black and Red.2. Disconnect the TCCM connectors.3. Check TCCM and connectors for corrosion.4. With a 30 amp fused jumper wire, supply B+ to the Red wire, pin D of the 4 pin connector.5. Ground the Black wire, pin C of the 4 pin connector.6. Check that the transfer case shift motor moves.7. Reverse polarity, check that the transfer case shift motor moves again.8. Clean ground G110 on the Left Hand (LH) frame rail, cab support.
I AM SORRY BUT THE TRUCK IS A 2008 WITH A 6.0 LITRE AND DO NOT HAVE A RED WIRE
Not the diesel. Ok. Do you know which transfer case it has?
NQF AND HAS A DIAL IN THE DASH FOR 4 HIGH, 4 LOW AND 2WD
1. Check for 8 volts on the Light Green/Black wire and 5 volts to the Brown/White, Dark Blue/White, Yellow/Black and Red/White wires at the encoder.2. Check the Black/White wire at the encoder for a good ground.3. If these are OK, it's probably a bad encoder motor.4. If the voltages are wrong, check for a wiring or Transfer Case Control Module (TCCM) problem.5. Check power and ground to transfer case control module.
OKAY SO I DONT HAVE BLACK AND WHITE OR RED WHITE WIRES I HAVE ORANGE, TAN,GREEN/ WHITE DRKBLUE/WHITE ,YELLOW
Ha ha. Ok. Back to the schematics. They made too many transmission, transfer case, transfer case switch options in the early 2000's if you ask me.