1999 Jeep Cherokee No Power

Tiny
CORKY99
  • MEMBER
  • 1999 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 151,000 MILES
I have a 99 Cherokee Sport, truck turns but won't start. No power to Fuel pump, Distributer, Guages not working. Raido, internal and external lights work. All fuses and relays good. Engine grounds are clean and attached. I am at a loss for problem. Have unpluged all sensors and switches I could find, and reseated them, traced wiring to find grounds and shorts, none found.
Thursday, July 3rd, 2008 AT 6:46 AM

14 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Try swapping the ASD (auto shut down) relay for the a/c relay and see if it will start. Have you used a test light to verify power to the fuel pump and ASD relays?
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Thursday, July 3rd, 2008 AT 7:45 AM
Tiny
CORKY99
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  • 8 POSTS
Swaped them last night no go will use test lite
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Thursday, July 3rd, 2008 AT 12:32 PM
Tiny
CORKY99
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  • 8 POSTS
Power to relay
no power to pump or distributer
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Thursday, July 3rd, 2008 AT 12:45 PM
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Should have more than 1 power in relay socket, 1 ground and the other is trigger from PCM
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Thursday, July 3rd, 2008 AT 2:02 PM
Tiny
CORKY99
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Only one hot socket in relay plug
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Thursday, July 3rd, 2008 AT 5:15 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi corky99,

If relay socket has only 1 power source, check ignition power output to relay.
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Sunday, July 6th, 2008 AT 10:08 AM
Tiny
CORKY99
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Hi, How would I go about doing that?
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Monday, July 7th, 2008 AT 6:13 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi corky99,

I am not very sure of the circuit layout so what I am going to describe might not be the actual circuit but it would give you an idea what to look for.

Relay socket has 4 points, 1 should be battery power, 1 to fuel pump and, another should be to PCM and the last 1 from the ignition switch.

Turn ignition switch on and test if you have power supply to 2 points instead of 1.
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Monday, July 7th, 2008 AT 9:26 AM
Tiny
CORKY99
  • MEMBER
  • 8 POSTS
Still only one socket is powered. I did replace the ignition switch last year.
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Monday, July 7th, 2008 AT 8:29 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi corky99,

What if you crank the engine? 1 or 2 powered socket?

It should have 2 powered sockets so you need to check where the missing power is.
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Tuesday, July 8th, 2008 AT 7:17 AM
Tiny
CORKY99
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  • 8 POSTS
Still only one powered socket
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Tuesday, July 8th, 2008 AT 9:16 PM
Tiny
KHLOW2008
  • MECHANIC
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Hi corky99,

If the powered terminal is with ignition OFF, you need to check power supply from the ignition switch, (broken wire, blown fuse, faulty ignition switch)

Use test lamp and apply battery current to the terminal that is supposed to have power and see if the dash indicator lights works, if yes the ignition switch or power suppply to it is missing.

If power is available only when ignition is turned on or cranked, you need to check for blown fuse under hood, broken wire and bad connectors from underhood to socket. The main supply power line is faulty.
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Wednesday, July 9th, 2008 AT 12:47 AM
Tiny
CORKY99
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Got a code reader and ran it P1694 was the fault that came up. What I have found out about this code is: 1694 No messages received from the powertrain control module. Does this mean my computer is bad or could there be other problems as well? I also found that there is continuity between the positive battery terminal and ground sources.
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Saturday, July 12th, 2008 AT 12:14 PM
Tiny
KHLOW2008
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Hi corky99,

The code is manufacturer controlled so I guess the ECM is faulty.
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Saturday, July 12th, 2008 AT 1:14 PM

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