Question about 2004 Isuzu Rodeo

4 Answers

It's a holden rodeo turbo/diesel 2005.check 4wd light on

Obviously check 4wd light is on and 4wd is not functioning(4H,4L) actuators in the transfer case and front axle was already replaced with brand new unit as we suspect it the cause of the problem.But is not.Apparently no 12v supply goes to the other end of the harness to trigger the actuators whenever you press 4H or 4L pushbutton in the dashboard.If only i know the procedure on how to reset or turn off the check 4wd light that could have restore the system function.We try to use a scanner hoping we could erase the trouble code unfortunately our equipment could not read anything about transmission or powertrains.I'm 100% sure no problem with the trans or transfer case.Thank you!

Posted by tedtdayon on

  • 1 more comment 
  • topswampkid Apr 03, 2009

    I have the exact same problem. The check 4wd light is on and 4wd wont work. I did jump start the car but I used the right surge protected leads.

  • jyetara Apr 10, 2009

    Same here. Any luck with any of you two regarding the "4wd light" ?

  • Anonymous Apr 16, 2009

    i have a 2003 3l diesel and my check 4x4 light is on how can i sort it



4 Answers


  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 20 times.

    New Friend:

    An expert that has 1 follower.


    An expert that has over 10 points.

  • Contributor
  • 2 Answers

A mere 2,400km into the life of my 07 Rodeo TD 4WD, I used 4L for about 2km of medium-steep/slippery track. After stopping and selecting 2WD the 'Check 4WD' light appeared, meaning I was stuck in 2WD for the rest of that trip. Luckily I was able to complete the trip in 2WD without incident.

The dealer blamed me for 'not following the instructions in the manual' (utter codswallop), 'fixed' it, and very reluctantly gave me a scribbled set of instructions on resetting the system, which I've included below.

When I suggested that these instructions should be included in the manual, the response was 'not necessary if owners use the system correctly'. More cods.

Here's how to reset it:

1. Ignition off, hold all 3 buttons (2H, 4H & 4L) in together

2. Switch ignition on to 'reds' position (last position before start)

3. Hold in this state for 30 seconds

Hope this may be of use !!

Posted on Jan 06, 2010

  • 6 more comments 
  • kalabau Jan 15, 2011

    Thank You. It works on my D'MAX

  • andreas1 Jan 29, 2011

    thank you. it works on my d-max also

  • rvincent339 Mar 11, 2011

    thanks worked on my holden rodeo 06 RA

  • Marc William Denis
    Marc William Denis Aug 09, 2011

    Big thank you. Worked on my 2006 D-Max

  • paltell Dec 03, 2011

    I tried this way, but it can't resolve my problem. please give me another way.

  • kk7748
    kk7748 May 09, 2012

    Thank you, it really works.

  • mawaho
    mawaho Jul 18, 2013

    Many thanks for the solution. It worked! We were in the outback and that dreaded light came on. It was horrible not knowing what the problem was and not having 4wd if needed. I came across this site and the solution was a brilliant fix. Thanks again. Our car is holden rodeo turbo/diesel 2005.

  • comtech37 Dec 31, 2014

    Thanks very much. It really works...




  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

I did this a few days back and is all fixed. Can email a picture/diagram for anyone that needs it.

Posted on Apr 24, 2009

  • 3 more comments 
  • jyetara Jan 06, 2010

    Solution 3 only works for later-model Rodeos.

  • jonathan71 Nov 02, 2010

    hi could you email me the picture/diagram please . my email address is [email protected]

  • jyetara Nov 03, 2010

    Here is an updated link with the 2 files that include instruction to reset the Control Module. It is a common fault with Isuzu D-Max (Dmax D max) and Holden Rodeos:

    The 2 x files are there along with the button-reset procedure for later models.

    Any problems, email me...

  • Andrew GODDEN
    Andrew GODDEN Sep 06, 2018

    could you please e mail me picture diagram please my email [email protected] thanks

  • biglescramer Oct 19, 2019

    if you have a diagram could you please post it or send to [email protected] ... the swimnspa link no longer works... it would be most helpful..reset with wire to 36 pin plug worked last time but i cant remember which numbers to connect... if any one knows .. shoot me an email please




  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

Reset of the 4wd controller is performed by removal of the drivers seat for access to the controller.unbolt the controller for easier access,bridge terminals 1(topleft) of 20 pin connecter with terminal 9(bottomleft) of 16 pin connector as well as terminals 10 and 16 of 16 pin connector. turn on ignition for 3 seconds remove bridges and recheck

Posted on Apr 23, 2009

  • 2 more comments 
  • paltell Dec 03, 2011

    are you sure about this way. I tried it but fails.

  • paltell Dec 03, 2011

    pin 10 and 16 of 16 pin connector are empty. so how can connect it together?

  • paltell Dec 08, 2011

    [email protected]
    please send me the solution

  • alvaro1771954 Oct 29, 2012

    The terminal of the left is of 20 pins and of the right is of 16 pins. The numeration of those pins are of right to left, join pin 10 of terminal with 20 pins with pin 16 of terminal of 16 pins and join pin 9 of terminal 16 pins with pin 15 of terminal 16 pins with pin 9 of terminal 16 pins. connect this for about 30 seconds



  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

Are you sure about this way. I tried it but fails.

Posted on Feb 24, 2012

  • Brian Grebert
    Brian Grebert Aug 03, 2014

    Yep. tried it too but no good. Perhasp a further issue.


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

4x4 won;t ingage,2000 chevy tracker

Hi Wayne how's it going ? Here is a Transfer Case Circuit Description ! then I will get into some possibility's of what could be wrong !
There are two main components for the four wheel drive. The powertrain control module (PCM) and the front drive axle actuator pump. The pump is controlled by the PCM. The pump compresses air to engage the front axle. When the transfer case is in four wheel drive (4H or 4L), the four wheel drive switch closes providing a ground signal to the PCM. The PCM actuates the pump which pressurizes the actuator in the front axle. This pressure engages the axle hub which connects the front drive shaft to the axle shafts, allowing the transmission/transfer case to turn the front wheels. The PCM will not operate the pump for more than 10 seconds in order to protect it. The PCM will also provide a path to ground for the 4WD indicator in the instrument cluster. The indicator is provided battery voltage when the ignition switch is in the ON or START position through the IG fuse. With power and ground supplied, the indicator lights.
When the transfer case is in 4L (with auto trans), the four wheel drive low switch sends a ground signal to the PCM. The PCM will not engage the torque converter clutch while this signal is being received.
When the transfer case is returned to the two wheel drive mode, the release valve in the pump opens and releases the pressure in the actuator. Without pressure, the hub disengages.The PCM also releases the ground to the 4WD indicator which causes the indicator to turn off.
Does the four-wheel drive indicator light with 4x4 engaged ? DEFINITION: The 4WD indicator does not illuminate with 4WD engaged. All other engine and transmission functions are normal. Refer to: Electric Motor and Actuator Check in Driveline/Axle-Front Axle (w/diff).
The next step of testing the electric motor an actuator involve a lot of steps an a special tool -
J 43846 Actuator Pressure Gauge
This a factor diagnostic flow chart , I'm not familiar with the in's an out's of this system , the most probable thing's that go wrong with this system. If you want I can send you the diagnostic flow chart !
Electric Motor and Actuator Check
Tools Required J 43846 Actuator Pressure Gauge
  1. Raise the vehicle. Support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. If the vehicle is equipped with an engine skid plate, remove the four bolts that hold the skid plate in place. Remove the front skid plate from the vehicle.
  3. tif.gif
  4. Install theJ 43846 with the air hose connecting between the air pump assembly and the front differential actuator.
  5. Tighten the adjusting knob as far as it stops.
  6. Important: Be careful not to bend any part of the hose.
  7. Turn on the ignition switch and shift transfer lever from 2H to 4H range.
  8. Make sure to check that the motor of the actuator starts running (a running sound can be heard) within 1 second and it stops when the actuator pressure gauge indicates specified pressure. Check for air leakage during the procedure. Pressure specification is: 38.0 kPa (5.40 -- 8.25 psi).
  9. Check that the pressure indicated on the gauge drops as soon as the transfer lever is shifted to the 2H position.
  10. Start the motor of the actuator pump by shifting the transfer lever to the 4H position again. Loosen the adjusting knob to lower the pressure on the gauge. The actuator motor should start to run again and stop in about 4 seconds.
  11. With the adjusting knob of the actuator pressure gauge loosened, shift the transfer shift lever to neutral or the 2H position and then 4L or 4H position. Pump motor should stop in about 10 seconds after the motor starts to run.
  12. tif.gif
  13. Disconnect the air hose (2) from the actuator pump assembly and connect it the front differential air hose inlet. Loosen the adjusting knob.
  14. Connect the air compressor air hose to the actuator pressure gauge.
  15. Compress air into the actuator pressure gauge and turn knob to obtain specified pressure. Specified pressure : 38.0 kPa (5.40 psi)
  16. While both wheels are lifted off the ground, turn one of the front wheels by hand and check the other wheel for the following:
When applying pressure to the actuator pump the other front wheel should turn in the direction opposite to the wheel being turned by hand.

When the actuator pump is not working (by not applying pressure) the other front wheel should remain stationary while the wheel turned by hand is turning.


Install the actuator pressure gauge to the actuator pump assembly (1) .

Install a voltmeter and the battery to the pump assembly (1) .

Tighten the adjusting knob as far as it will stop and the air check side opening by a hose as a blind plug.

Check that the actuator assembly motor starts to run (a running sound can be heard) when the battery is connected and when it stops when specified pressure is obtained. Specified pressure is: 38.0- 58.0 kPa (5.40 -- 8.25 psi).

Ensure that the voltmeter is within specifications when the motor is running should be about 0v and when the motor has stopped it should be about 10 -- 14v
good luck !

Jan 27, 2015 | 2000 Chevrolet Tracker

1 Answer

2009 Colorado 4x4 38000 miles. 4H wont engage, light wont stop flashing. Replaced the Actuator but still the same problem.

I am sure you already know this but will mention it anyway just for others that read your question. On all of my trucks you can not shift in or out of 4wd low unless transmission (not transfer case) is in neutral and vehicle pretty much stopped. The transfer case for 4wd low is geared so different that system will not change back out of low (or fully into low) unless trans control is telling computer that it is in neutral.

Jan 17, 2015 | 2009 Chevrolet Colorado

1 Answer

Why trasfercase does not transfer from 4LLock to 4HLock or 4H when changing the mode??

Perhaps the gear trains are 'in a bind' and the electric/vacuum actuators cannot exert enough force to shift them.

Try driving at slow speed in a straight line on soft surface (not concrete) for 100 feet, then back up in straight line. The idea is to allow any residual loads from the LOCK position to dissipate and unload the shifters.

Sep 13, 2014 | Cars & Trucks

1 Answer

My 98 f150 was in 4WD Hi this morning when I started it. Selector switch is in 2WD position. 4WD Hi light is on, hubs (or front differential) is engaged and transfer case engage. (Feel front wheel hop...

If the switch was in the 2WD position and the transfer case was locked in a 4WD range, my 2 SWAGs would be bad switch or the connector to the shift motor is damaged / corroded or the fuse to the transfer case shift relay module is blown ( fuse # 17 ) / problem with the transfer case shift relay module.

This is without knowing if the truck was used in 4WD the night prior, and shifted out just before turning off. If this is the case, the shift motor might be stuck, and a few hits with a dead blow hammer to the transfer case might jar it free again ( do not use a metal hammer, it could damage the transfer case ).

The vacuum shift solenoids on the firewall are controlled by the GEM ( Generic Electronic Module ) which is grounding either the 2WD or 4WD solenoid, depending on the shift plate contacts in the transfer case. ( when in 4 or 4H, the contact switch plate signals the GEM, which in turn grounds the correct solenoid ).

Pulling the switch will not cause the transfer case to go back to a default position, the switch has a resistance level for each mode, and needs that value to operate the shift motor.

The resistance values for the switch between the 2 dark blue wires:
2WD - 4100 to 3700 ohms
4H - 1050 to 1150 ohms
4L - 380 to 340 ohms
- find the wire locations on the switch, mark them and remove the connector to test the resistance.

Just my opinion on the order :

1. Check the fuses for the shift motor
2. Try the old school shift method, back up ~ 50' put into park or neutral, and shift from 4WD to 2WD.
2.1. This is to see if the transfer case shift motor is bound up, and reversing might release it
3. Try hammering the transfer case with a dead blow hammer while someone shifts from 2WD to 4WD. You only need the key in the run position, if it happens quick enough after running the engine, the vacuum reservoir will still have enough vac to operate the solenoids. Don't chance running yourself over.
3.1. If this frees up the shift motor and the vacuum has bled off, you can try starting the truck and shifting into 4H then back to 2WD to get the front axle to disconnect or manually vacuum operate the front disconnect motor by applying vacuum to the pink vacuum line on the shift motor on the front axle.

Mar 05, 2011 | 1998 Ford F150 Regular Cab

1 Answer

Installed new 4wd actuator in 2002 F-150, hooked up vacuum lines, but 4x4 light does not come on and 4wd does not engage. Is there a little bit of time for vacuum to build, or did I do something wrong. ...

Transfer Case - Mechanical Shift On The Fly (MSOF) Operation The mechanical shift on the fly (MSOF) system is a manual shift 4WD system that allows the operator to chose between two different 4x4 modes as well as 2-wheel drive. The operator can switch between 2WD and 4H mode at speeds up to 88 km/h (55 mph). To engage or disengage 4L range, the vehicle speed must be less than 5 km/h (3 mph), the brake pedal depressed, and the transmission must be in NEUTRAL.
Shifts between 2H and 4H can be made at a stop or any forward speed up to 88 km/h (55 mph). At temperatures below 0°C (32°F) shifts should not be performed above 72 km/h (45 mph).
The transfer case is equipped with an electromagnetic cluch which is located inside the case. This clutch is used to spin up the front driveline when shifting from 2WD to 4x4 mode at speed. When the manual shift lever is moved, this activates the 4WD indicator switch, 4WD electric clutch relay, and the electromagnetic clutch. When the transfer case front and rear output shafts are synchronized, the spring loaded lockup collar mechanically engages the mainshaft hub to the drive sprocket. Finally, the front axle collar is engaged and the electromagnetic clutch is deactivated.

Jan 09, 2018 | Ford F-150 Cars & Trucks

1 Answer

I woud put my 96 dodge in 4H or 4L but not engage.The 4wd light in the instrument panel woul not came on, need ideas, thanks.

Might try checking the vacuum actuator located on the front drive axle, I believe it is on the right side top of the axle. It has vacuum lines to it that engages a fork to the axle and locks it up, also this is where the 4x4 indicator lite is located at.

Dec 21, 2010 | 1996 Dodge Ram

3 Answers

The four wheel drive on my 1996 Chevrolet C/K 1500 Z71 doesn't seem to be working. I can shift the floor shifter to 4H or 4L and no indicator light comes on and it is only in 2wd. What could be the issue?

Check the 4WD fuse and the illumination fuse in the I/P fuse block. Also check the Transfer Case Switch and the Front Axle Actuator for a fault. I would say that the Front Axle Actuator is the most common failure. I think there is even an updated actuator asy available. Check with you local chevy dealer for price and availability.

Feb 06, 2010 | 1996 Chevrolet K1500

1 Answer

Denali slips in and out of 4x4

How may buttons for the 4X4 two , three , or four ? Do the lights flash ? Any messages - service four wheel drive system ? Which transfer case does it have ?

Transfer Case - NVG 246-NP8 (Two Speed Automatic)
The transfer case shift control module uses the VIN information for calculations that are required for the different calibrations used based on axle ratio, transmission, tire size, and engine. The system does not know which calibration to use without this information.
Transfer Case Encoder Motor
The transfer case encoder motor consists of a permanent magnet (PM) DC motor and gear reduction assembly. It is located on the left hand side (drivers side) of the transfer case. When activated it turns the sector shaft of the transfer case (clockwise or counter clockwise) to shift the transfer case. The encoder motor is controlled with a pulse width modulated (PWM) circuit within the transfer case shift control module. This circuit consists of a driver on both the Motor Feed A and Motor Feed B circuits. The encoder motor is bi-directional to allow the motor to shift the transfer case from 2HI or 4HI to NEUTRAL and 4LO positions.
Transfer Case Encoder
The encoder is mounted to the transfer case encoder motor assembly and is replaced as an assembly. The encoder converts the sector shaft position (representing a mode or range) into electrical signals inputs to the transfer case shift control module. The module can detect what position the transfer case is in by monitoring the 4 encoder channels (P, A, B, and C). These inputs translates into AUTO 4WD, 2H, 4H, NEUTRAL, and 4L or in transition between gears.
Transfer Case Motor Lock
The transfer case motor lock is used to provide a 2H, 4H, and 4L lock-up feature. When the lock circuit is energized, the transfer case encoder motor is allowed to turn. When the transfer case is placed 2H, 4H, or 4L the motor lock circuit has no power provided to it and the lock is applied. This assures that the transfer case remains in the current gear position. When AUTO 4WD is selected the motor lock remains applied until an adaptive mode (torque is applied to the front propshaft) is required. During an adaptive mode the motor lock circuit is energized and the motor lock is released, enabling the encoder motor to turn and apply torque to the front propshaft.

SERVICE indicator (4WD/AWD) Lamp
The SERVICE indicator (4WD/AWD) lamp is an integral part of the cluster and cannot be serviced separately. This lamp is used to inform the driver of the vehicle of malfunctions within the automatic transfer case (ATC) system. The SERVICE indicator (4WD/AWD) lamp is controlled by the transfer case shift control module via a Class 2 message or by a Sevice Indicator Control Circuit.

The first thing to do before assuming it's a loose wire would be to have it checked for codes , auto zone , advance etc... can not check this codes .
DTC B0768 Service Indicator Circuit High
DTC B2725 ATC Mode Switch Circuit Malfunction
DTC C0300 Rear Speed Sensor Malfunction
DTC C0305 Front Speed Sensor Malfunction
DTC C0308 Motor A/B Circuit Low
DTC C0309 Motor A/B Circuit High
DTC C0310 Motor A/B Circuit Open
DTC C0315 Motor Ground Circuit Open
DTC C0323 T-Case Lock Circuit Low
DTC C0324 T-Case Lock Circuit High
DTC C0327 Encoder Circuit Malfunction
DTC C0357 Park Switch Circuit High
DTC C0362 4LO Discrete Output Circuit High
DTC C0367 Front Axle Control Circuit High
DTC C0374 General System Malfunction
DTC C0376 Front/Rear Shaft Speed Mismatch
DTC C0387 Unable to Perform Shift
DTC C0550 ECU Malfunction
DTC C0611 VIN Information Error

If you know nothing about this , your best bet would be to take it to a qualified repair shop .

Apr 29, 2017 | 2000 GMC Denali

Not finding what you are looking for?
2004 Isuzu Rodeo Logo

11,183 people viewed this question

Ask a Question

Usually answered in minutes!

Top Isuzu Experts


Level 3 Expert

85239 Answers

Steve Hurc
Steve Hurc

Level 3 Expert

459 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Are you an Isuzu Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides