Skidpad13
SILVER Star
Ok guys, sorry to ask a question asked so many times before in different ways. When I got my 1997 FZJ80 I knew ahead of time that the lockers would not engage so I'm cool with tracking it down but now that I've read through numerous posts and searched every way I can think of I'm coming asking for help. Here's what my symptoms are and what I've done so far.
After reading the SLEE writeup on the 7-pin mod, I'm going to assume that the Diff Lock ECU and the Transmission Relay (Part # 89531-60010) are the same thing.
Now, per the FSM page below I want to check the relay/ECU.
1st I get to the ECU behind the ABS computer and then I unplug the wiring harness from it to perform the following test.
However (and I know this is a dumb question but indulge my the color-by-numbers approach) I'm going to assume that on each of these pin tests the Body ground they are referring to is PIN 13 and not a lead connected to a longer test wire that is grounded out to the body, correct?
In other words, if I want to check voltage of the center diff in the non-engaged position, I put one lead from the meter on pin 13 of the wiring harness that connects to the relay/ECU and the other lead on pin 15.
Am I correct?
Yes, I've used a multimeter for years but I want to confirm the basics for those that may be reading this for the first time. So, for example, in this case I should see somewhere around 12 volts DC if the center diff is not engaged, right?
Any insights, comments, useful criticism (haha), etc... will be truly appreciated.
Once I get past the ECU and can get a reliable confirmation that I have the voltage getting there then I feel like I'll be ready to move onto actuators if it comes to that.
I have not replaced the fusible link yet but I may do that as a matter of course despite what these tests tell me.
Thanks for your help everyone.
- Checked the DIFF fuse and replaced for good measure
- Made sure that the FR and RR lights flash on the dash when I turn the Diff Lock Switch Clockwise (they do flash)
- I replaced the transfer case low range switch as the previous one was showing no continuity when pressed.
- I cleaned the contacts that connect to the above mentioned switch
- Tested the low range, slow speed, in the grass doing figure eights. Nothing.
- Installed the dash mounted center diff lock (CDL) switch per everyone's recommendation
- Pressed the CDL switch with the key in the on but not started position; no center diff light on dash
- Pressed the CDL switch with the key in the on but not started position while listening for relay engagement at driver's left foot area as well as under the truck for center actuator noise. Neither of these made a sound.
After reading the SLEE writeup on the 7-pin mod, I'm going to assume that the Diff Lock ECU and the Transmission Relay (Part # 89531-60010) are the same thing.
Now, per the FSM page below I want to check the relay/ECU.
1st I get to the ECU behind the ABS computer and then I unplug the wiring harness from it to perform the following test.
However (and I know this is a dumb question but indulge my the color-by-numbers approach) I'm going to assume that on each of these pin tests the Body ground they are referring to is PIN 13 and not a lead connected to a longer test wire that is grounded out to the body, correct?
In other words, if I want to check voltage of the center diff in the non-engaged position, I put one lead from the meter on pin 13 of the wiring harness that connects to the relay/ECU and the other lead on pin 15.
Am I correct?
Yes, I've used a multimeter for years but I want to confirm the basics for those that may be reading this for the first time. So, for example, in this case I should see somewhere around 12 volts DC if the center diff is not engaged, right?
Any insights, comments, useful criticism (haha), etc... will be truly appreciated.
Once I get past the ECU and can get a reliable confirmation that I have the voltage getting there then I feel like I'll be ready to move onto actuators if it comes to that.
I have not replaced the fusible link yet but I may do that as a matter of course despite what these tests tell me.
Thanks for your help everyone.