ZUKIWORLD Online | Suzuki 4x4 Editorial and Forum

ZUKIWORLD Model Specific Suzuki Forum => Suzuki Grand Vitara, Vitara, Chevy Tracker (Gen. 2 Platform) 1999-2005 => Topic started by: HondaDNA on September 24, 2012, 11:06:01 PM

Title: 00 Tracker 4WD light not working, 4WD IS working
Post by: HondaDNA on September 24, 2012, 11:06:01 PM

New member, just picked up a 00 Tracker 2liter auto. The 4WD light isn't working,  I swapped the bulb with known good ones and even probed the cluster harness and have no power to the 4WD light. 


I can hear the pump kick on when 4H is engaged and I have axle bind up when making tight turns in 4L. What would the next step be to test the circuit?

Title: Re: 00 Tracker 4WD light not working, 4WD IS working
Post by: talonxracer on September 25, 2012, 06:41:24 AM

The switch on the transfercase is probably faulty

Title: Re: 00 Tracker 4WD light not working, 4WD IS working
Post by: fordem on September 25, 2012, 07:26:27 AM

Actually - no - if the switch on the transfer case were faulty, the 4WD controller would never engage the pneumatic freewheel mechanism in the front axle - he's hearing the pump come on, so that switch has to be working.

HondaDNA - I just replied to your thread over at the Suzuki forums in some detail - what color wire to measure, what voltage to look for and so on - you should find what you need over there.

Title: Re: 00 Tracker 4WD light not working, 4WD IS working
Post by: HondaDNA on September 25, 2012, 10:02:05 AM

Thanks fordem, I'll hop over there and check it out.

Title: Re: 00 Tracker 4WD light not working, 4WD IS working
Post by: JayInBarrie on September 25, 2012, 04:20:42 PM

Funny, I just bought a '99 1.6L today.
The 4wd was working, as the turned up gravel indicated, but the old owner had never seen a 4wd light come on.
When I got home I checked and there was a plug by the pump unpluged, plugged her in and "tada" the 4wd light came on. Maybe for the psi sensor to trip the 4wd light. ;D

Title: Re: 00 Tracker 4WD light not working, 4WD IS working
Post by: fordem on September 26, 2012, 10:20:53 AM

There's only one electrical connector there - it has three wires, black, ground; red, +12V power to the pump and pink, feedback from the pressure switch to the 4WD controller.

Very simplified, here's the sequence of events - the 4WD switch on the transfer case tells the 4WD controller when 4WD has been selected, and the controller applies power to the pump and monitors the feedback signal - if it sees the signal go high, it turns the 4WD light on, if it does not go high after 10 seconds, the controller shuts the pump off as a protective measure. Assuming that everything is functional, the pressure from the pump engages a freewheel clutch transmissitng drive from the ring & pinion to the differential.

When you shift back to 2WD, the controller shuts the pump off & opens a "dump valve" releasing the air and disengaging the freewheel mechanism