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Ask Chris (aka- Moose) Your Own Question
Chris (aka- Moose)
Chris (aka- Moose), Technician
Category: Transmissions
Satisfied Customers: 1618
Experience:  16 yrs. experience with auto, manual, & CVT drivelines
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SERVICE 4X4 LIGHT COMES AND AND VEHICLE GETS STUCK IN LOW.

Customer Question

SERVICE 4X4 LIGHT COMES AND AND VEHICLE GETS STUCK IN LOW.
Submitted: 1 year ago.
Category: Transmissions
Expert:  Jared D replied 1 year ago.

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.

Customer: replied 1 year ago.

I AM SORRY BUT THE TRUCK IS A 2008 WITH A 6.0 LITRE AND DO NOT HAVE A RED WIRE

Expert:  Jared D replied 1 year ago.

Not the diesel. Ok. Do you know which transfer case it has?

Customer: replied 1 year ago.

NQF AND HAS A DIAL IN THE DASH FOR 4 HIGH, 4 LOW AND 2WD

Expert:  Jared D replied 1 year ago.

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.

Customer: replied 1 year ago.

OKAY SO I DONT HAVE BLACK AND WHITE OR RED WHITE WIRES I HAVE ORANGE, TAN,GREEN/ WHITE DRKBLUE/WHITE ,YELLOW

Expert:  Jared D replied 1 year ago.

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.