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Old 19th January 2021
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Default code p1001

i have every code cleared but p1001.i google it and it says a corroded fuse box or short.i cleaned them all up and put electrical grease on all.iv'e posted this alot but it seems nobody has a answer.all new fuses and relays and my fuel pump continues to run when light goes off.This was a year and ahalf ago and want to fix before i sell it.
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Old 19th January 2021
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Default

You make it difficult to help when you make new threads instead of continuing to post in the previous thread that already had lots of advice and showed the fixes you already tried...

Did you use a meter to test each of the connections to the System Relay?

The schematic shows that the GREEN/Orange wire on the #86 terminal of the relay (that is socket position K or #1) controls the Active/Inactive condition of the System Relay. When the GREEN/Orange wire is grounded it will activate the System Relay, providing power to the Fuel Pump, Coil, Injectors, etc.

The WHITE/Black wire provides power to the System Relay (#85 terminal - that is socket position F or #2) - This comes from the RUN/STOP switch - Therefore, THE RUN SWITCH MUST BE ON for the System Relay to Operate. Leave the RUN/STOP switch in the RUN position.

If the Fuel Pump is running all the time, it sounds like the System Relay is ACTIVE ALL TIME...

Work backwards - First verify the Coil is getting power all the time (or not).

(Check#1) Measure the voltage on the Coil connector, position A or B, after turning on the keyswitch and waiting 30 seconds... After that period, there should be no voltage to the Coil (nor the Fuel Pump, etc.) because the System Relay should turn on for 3-seconds, then turn off until the Starter Motor is rotating the engine.

If there is still power on the Coil, then the System Relay is ACTIVE (which is not right).

(Check#2) Now check that System Relay Control Wire (GREEN/Orange)... It comes from the ECM, Pin2, and it should be grounded for 3-seconds after the keyswitch is turned on, and then NOT-Grounded after that, until the Starter Motor is rotating the engine.

If it is grounded all the time, you need to find out if the ECM is grounding it? Or, it is shorted somewhere to ground, like at the relay itself.

(Check#3) With the Keyswitch OFF, check (meter on Ohms) to see if the GREEN/Orange wire is grounded (ECM, Pin2). If so, then you need to track down where the wire is shorted (start at the relay).


Do this - Then post EXACTLY what the meter read at each point you tested.


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Last edited by IXL2Relax; 19th January 2021 at 23:40..
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Old 20th January 2021
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Default p1001

okay thanks for giving me that information.Unfortunately wiring is my weak point and that fuse box is one cluddered mess.
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