96 xj 4.0 no power to coil???
01-31-2024, 01:27 PM
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96 xj 4.0 no power to coil???
Ok 96 xj 4.0 I have no voltage to the coil. Relay turns off power to coil when you try to start.. no short found in harness. Anyone have any ideas, this all stock.
01-31-2024, 05:44 PM
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Year: 96
Model: Cherokee (XJ)
Engine: 4.0
Do you have the FSM ?
There is quite a long description of fault finding, which also describes how the ASD relay interacts with the PCM
does the duel pump prime (audibly) for 3 secs when key is switched to "on"
You could have a faulty relay, swap it with another (such as A/C relay, there is a few in the PDC which are the same type
The ASD relay will switch off if the PCM does not detect a "ready" state from other sensors including crank sensor
Have you done an OBD2 check for codes ?
What happens if you disconnect the coil, does the relay still switch off
There is quite a long description of fault finding, which also describes how the ASD relay interacts with the PCM
does the duel pump prime (audibly) for 3 secs when key is switched to "on"
You could have a faulty relay, swap it with another (such as A/C relay, there is a few in the PDC which are the same type
The ASD relay will switch off if the PCM does not detect a "ready" state from other sensors including crank sensor
Have you done an OBD2 check for codes ?
What happens if you disconnect the coil, does the relay still switch off
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