1995 Bronco

[HeyJude10]

Hey guys,need some help.1995 Bronco,driving home the other day the ABS light came on,the O/D light started flashing,and the speedometer quite working all at once.Tranny went into limp home mode.Checked fuses first,and it keeps blowing the #5 fuse in the power dist. box.Also,replaced the rear speed sensor.Still having same problem.Any ideas or suggestions would be greatly appreciated.

 

[BroncoJoe19]

See what's on #5 fuse and start disconnecting the component(s), and see when the fuse stops blowing. The problem will be localized to that portion of the circuit.

I never had the need to build one of these, but it looks interesting.

http://www.inliners....tech/tech6.html

 

[miesk5]

yo Hey!

Take a look @ this TSB; in thsi instance Ford describes Fuse as E; which is prob marked as #5 in your PDB Cover

TSB 95-5-21 Fuse "E" Inoperative - ABS Light On - Back-Up Lamps Inoperative - DRLs Inoperative - MIL On - Speedometer Inoperative

Publication Date: MARCH 13, 1995

LIGHT TRUCK: 1992-1995 BRONCO, F-150-350 SERIES

ISSUE: On some vehicles the HO2S wires in the 12A690 (subassembly of the 14B060 battery cable) harness may become chafed and the vehicle could exhibit any one of the following conditions:

ABS light on

Speedometer inoperative

Back-up lamps inoperative

Daytime running lamps inoperative

Trailer battery charge relay inoperative

MIL on, displaying Codes: 172, 173 or 41 for HO2S failure

Inadvertent PCM Self-Test

ACTION: Replace the damaged wire harness and HO2S sensor. Refer to the following procedure for service details.

SERVICE PROCEDURE:

1. Disconnect negative battery cable.

2. Disconnect the solenoid terminal and positive battery cable from the starter.

3. Pull the cable downward to inspect the 12A690 harness for chafing, pinholes, etc. If necessary, remove the convolute and tape from the 12A690 harness located next to the lower RH side engine mount.

4. If the 12A690 harness is damaged, replace the 14B060 assembly (F5TZ-14300-EA) and the HO2S sensor (F4UZ-9F472-A).

5. Inspect Fuse "E" and replace if necessary (D9ZZ-14526-D).

6. Clear all codes stored in memory.

7. Retest and verify the concern has been resolved.

PART NUMBER - PART NAME

D9ZZ-14526-D Fuse - 15 Amp

F5TZ-14300-EA Harness Assembly

F4UZ-9F472-A HO2S Sensor

OTHER APPLICABLE ARTICLES: NONE

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION - DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - TIME

950521A - - - - - Replace Harness Assembly, HO2S Sensor And Fuse "E" (If Overloaded) - 0.7 Hr.



by Ford via Steve83

You can try to test for Codes using our pal, BroncoJoe19's process; http://broncozone.com/topic/14269-code-reader/page__p__74587entry74587

run it around to heat the engine up and shift thru all gears incl Reverse.

then; turn off all accesories/lights, etc.

Do KOEO portion first

For Key On Engine Running (KOER) portion, the engine has to be @ normal operating temp.

Post any codes found here or look em up in my broncolinks.com site.

 

[miesk5]

btw. I know this has happened to at least 2 others in past year.

13 12A690 Wire Assembly

If Image does not appear see it @ http://www.thedieselstop.com/faq/9497faq/maint/stj/images/k20713c.gif

 

[HeyJude10]

yo Hey!

Take a look @ this TSB; in thsi instance Ford describes Fuse as E; which is prob marked as #5 in your PDB Cover

TSB 95-5-21 Fuse "E" Inoperative - ABS Light On - Back-Up Lamps Inoperative - DRLs Inoperative - MIL On - Speedometer Inoperative

Publication Date: MARCH 13, 1995

LIGHT TRUCK: 1992-1995 BRONCO, F-150-350 SERIES

ISSUE: On some vehicles the HO2S wires in the 12A690 (subassembly of the 14B060 battery cable) harness may become chafed and the vehicle could exhibit any one of the following conditions:

ABS light on

Speedometer inoperative

Back-up lamps inoperative

Daytime running lamps inoperative

Trailer battery charge relay inoperative

MIL on, displaying Codes: 172, 173 or 41 for HO2S failure

Inadvertent PCM Self-Test

ACTION: Replace the damaged wire harness and HO2S sensor. Refer to the following procedure for service details.

SERVICE PROCEDURE:

1. Disconnect negative battery cable.

2. Disconnect the solenoid terminal and positive battery cable from the starter.

3. Pull the cable downward to inspect the 12A690 harness for chafing, pinholes, etc. If necessary, remove the convolute and tape from the 12A690 harness located next to the lower RH side engine mount.

4. If the 12A690 harness is damaged, replace the 14B060 assembly (F5TZ-14300-EA) and the HO2S sensor (F4UZ-9F472-A).

5. Inspect Fuse "E" and replace if necessary (D9ZZ-14526-D).

6. Clear all codes stored in memory.

7. Retest and verify the concern has been resolved.

PART NUMBER - PART NAME

D9ZZ-14526-D Fuse - 15 Amp

F5TZ-14300-EA Harness Assembly

F4UZ-9F472-A HO2S Sensor

OTHER APPLICABLE ARTICLES: NONE

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION - DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - TIME

950521A - - - - - Replace Harness Assembly, HO2S Sensor And Fuse "E" (If Overloaded) - 0.7 Hr.



by Ford via Steve83

You can try to test for Codes using our pal, BroncoJoe19's process; http://broncozone.com/topic/14269-code-reader/page__p__74587entry74587

run it around to heat the engine up and shift thru all gears incl Reverse.

then; turn off all accesories/lights, etc.

Do KOEO portion first

For Key On Engine Running (KOER) portion, the engine has to be @ normal operating temp.

Post any codes found here or look em up in my broncolinks.com site.

 

[HeyJude10]

Man I found it!!! I took off the battery cables and found a very tiny split in the negative cable that you really have to wrench to see. It was corroded inside so I cleaned it,hooked it back up and wouldn't you know it worked.I drove straight to the autoparts store and got a new cable,came home and slapped it on.Works good as new!! I knew it had to be something grounding out somewhere and did spend some time looking for it, just not with a as well as I thought. Thanks so much!!!!