help 04 TJ won't crank - JeepForum.com
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post #1 of 23 Old 09-18-2020, 12:31 PM Thread Starter
wdrakos
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help 04 TJ won't crank

2004 TJ SE won't Crank, battery is fine, replaced the starter, still won't crank. anyone else have this issue?

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post #2 of 23 Old 09-18-2020, 12:40 PM
2jhanna
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If it's an automatic, could be nss, neutral safety switch. Try it in neutral.

Manual, could be clutch switch.

I am multi-talented, I can talk and piss you off at the same time.

jhanna
denton county, tx
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post #3 of 23 Old 09-18-2020, 01:04 PM
jtec
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As mentioned above is this an automatic or manual?
Easiest, for me anyway, is to check at the starter relay, does relay click when key moved to start?
is there 12v when key in start B5?
is B3 a good ground?
Is there 12v B1?
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File Type: pdf TJ starter.pdf (162.2 KB, 8 views)

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #4 of 23 Old 09-18-2020, 01:52 PM Thread Starter
wdrakos
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Standard transmission, Relays have the appropriate voltage, I'm in the process of tracking down a clutch switch to try and change that out.
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post #5 of 23 Old 09-18-2020, 02:13 PM
2jhanna
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Our TJs have a feature called "clutch over ride". By inserting a 20a fuse in slot 20 behind the glove box, this will disregard the clutch switch.

Pretty dangerous if you think about it, but it lets crank the vehicle without depressing the clutch. This allows you to walk yourself out of the mud if your engine dies.

May want to double check your 04 manual but that's the location for my 02.

Put a fuse in the slot, either depress the clutch or make sure you're in neutral, and give it a try.

Edit, the fuse in slot 18 is a spare just for this purpose, so you can just move it from 18 to 20, for this test.

I am multi-talented, I can talk and piss you off at the same time.

jhanna
denton county, tx
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post #6 of 23 Old 09-18-2020, 02:25 PM
jtec
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IIRC the clutch pedal switch (CPPS) is part of clutch master SO might want to be sure its bad.

following above suggestion see attachment - not a recommendation but a get you going idea
note the spare is right next to the bypass #20. in fuse F19
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When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #7 of 23 Old 09-18-2020, 02:36 PM
2jhanna
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Jtec, so the 04s fuse box is different than a 02s ???

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denton county, tx
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post #8 of 23 Old 09-18-2020, 02:39 PM
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Quote:
Originally Posted by wdrakos View Post
Standard transmission, Relays have the appropriate voltage, I'm in the process of tracking down a clutch switch to try and change that out.
If this statement is meant to say the starter relay is getting voltage at both appropriate terminals, one for the power feed that connects to the starter when the relay is energised and one for the operation of the relay's solenoid, then the problem cannot be due to the clutch interlock/safety switch. This switch interrupts or completes the power feed side of the relay control circuit. If you're getting good power on those two feeds but the relay is failing to energise, then the ground side of the relay control circuit is open. If the feeds are good and the relay is energising when the key is turned (you can hear or feel it click), then either the relay contacts are bad or the feed wire from the relay output going to the starter is faulty.
NashvilleTJ and jtec like this.

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post #9 of 23 Old 09-18-2020, 04:44 PM
jtec
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2jhanna can't say 02 and 04 wiring is same - I was online doing work so it was an easy click click to get 04 diagram.

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #10 of 23 Old 09-19-2020, 08:21 AM
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Quote:
Originally Posted by 2jhanna View Post
Our TJs have a feature called "clutch over ride". By inserting a 20a fuse in slot 20 behind the glove box, this will disregard the clutch switch.

Pretty dangerous if you think about it, but it lets crank the vehicle without depressing the clutch. This allows you to walk yourself out of the mud if your engine dies.

May want to double check your 04 manual but that's the location for my 02.

Put a fuse in the slot, either depress the clutch or make sure you're in neutral, and give it a try.

Edit, the fuse in slot 18 is a spare just for this purpose, so you can just move it from 18 to 20, for this test.

I learn something every day on this forum.

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post #11 of 23 Old 09-19-2020, 08:45 AM
2jhanna
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This topic got me thinking, is there any reason a manual TJ can’t be push started? Get it rolling good and let the clutch out.

I am multi-talented, I can talk and piss you off at the same time.

jhanna
denton county, tx
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post #12 of 23 Old 09-19-2020, 12:03 PM
mukluk
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Quote:
Originally Posted by 2jhanna View Post
This topic got me thinking, is there any reason a manual TJ can’t be push started? Get it rolling good and let the clutch out.
You can push start a TJ, just so long as the battery isn't dead. The PCM has to have juice in order for the engine to fire and for the alternator to work.
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post #13 of 23 Old 09-19-2020, 12:46 PM
PDoyle
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Probably want to make absolutely sure the battery is good, IMO.

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post #14 of 23 Old 09-19-2020, 08:55 PM
Dale M.
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My 02 TJ lost ground from manual trans C154 connection and would not crank..... Check to see if there is a ground on the B3 terminal of starter relay socket...

As a test you can also remove starter relay and jump B1 and B2 terminal in relay socket and it should spin up starter BESURE YOU ARE IN NEUTRAL....

Dale
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File Type: pdf tj starter.pdf (128.2 KB, 5 views)

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post #15 of 23 Old 09-19-2020, 09:43 PM
2jhanna
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The OP hasn't been back since 3:00 yesterday.

I am multi-talented, I can talk and piss you off at the same time.

jhanna
denton county, tx
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