Is the ecm for a 2006 reno on the firewall. I have a no crank situation.fire for about 3 seconds on the ign/coil fuse.

The shorted coil might have taken out the DIS module. I believe that most national parts store chains have a machine that can test them. I would call and verrify that your local store can, and would pull it and take it in to them to make sure if it is good or not.

I0check your ignition fuse, and check the ign. coil for spark. Pull the coil wire off and see if you have spark from the coil.

Check fuel pump.

The coils are fired by the ECM, check all the wires to the ECM from the coils and make sure the signal is getting through and you don't have a wiring issue at the engine firewall connector on the driver side firewall.

Firing Order is 1 3 7 2 6 5 4 8

JF: Integrated Ignition Coil On Plug Coil 1 Through 10 Failure

2000 PCED On Board Diagnostics II


SECTION 5: Pinpoint Tests




Procedure revision date: 01/31/2001










JF: Integrated Ignition Coil On Plug Coil 1 Through 10 Failure


? JF: Introduction




JF1 DETERMINE WHICH COIL IS NOT FIRING

Note: Electronic ignition engine timing is entirely controlled by the PCM. Electronic ignition timing is NOT adjustable. Do not attempt to check base timing. You will receive false readings.


• Determine which coil is not firing using information from Pinpoint Test JB or DTC and the table at the beginning of this pinpoint test.



• Record cylinder, coil and PCM pin number from the table.

Have the cylinder number, coil driver and PCM pin number been recorded?







Yes


No






GO to JF2.


To obtain required information, GO to JF1 and REPEAT.




JF2 DTC P0351, P0356, P0357: CRANKSHAFT POSITION SENSOR FAILURE
Are any of the above listed DTCs present?







Yes


No






GO to JF3.


GO to JF4.




JF3 CHECK RESISTANCE OF CRANKSHAFT POSITION SENSOR

• Measure resistance of crankshaft position sensor.

Is resistance between 290 and 390 ohms (for LS8 between 900 and 1300 ohms)?







Yes


No






GO to JF4.


REPLACE crankshaft position sensor. COMPLETE Misfire Monitor Repair Verification Drive Cycle (REFER to Section 2, Drive Cycles).




JF4 CHECK FUNCTIONALITY OF SUSPECT COIL DRIVER (CD) CIRCUIT

• Disconnect suspect coil (determined from the table).



• Connect incandescent test lamp between IGN START/RUN and suspect CD circuit (determined from the table) at the coil on plug harness connector.



• Disable fuel pump by disconnecting inertia fuel shutoff switch.



• Observe incandescent test lamp while cranking engine.

Is the test lamp blinking consistently?







Yes


No






KEY OFF. GO to JF5.


KEY OFF. GO to JF6.




JF5 CHECK FUNCTIONALITY OF SUSPECT COIL

• Remove suspect coil (determined from the table) from spark plug.



• Connect an air gap spark tester 303-D037 (D81P-6666-A) or equivalent to a suspect coil.



• Reconnect suspect coil harness connector.



• Observe spark tester while cranking engine.

Is the spark present?







Yes


No






KEY OFF. INSPECT spark plug, REPLACE if necessary. GO to Z1.


KEY OFF. REPLACE coil. INSPECT spark plug, REPLACE if necessary. COMPLETE Misfire Monitor Repair Verification Drive Cycle (REFER to Section 2, Drive Cycles).




JF6 CHECK IGN START/RUN VOLTAGE TO SUSPECT COIL

• Key on, engine off.



• Measure voltage between IGN START/RUN circuit at the coil on plug harness connector and ground.

Is voltage greater than 10.0 volts?







Yes


No






KEY OFF. GO toJF7.


KEY OFF. LS6 and LS8: GO to B5.

All others: IGN START/RUN circuit fault. CHECK condition of related fuses/fuse links. If OK, REPAIR open circuit. If fuse/fuse link is damaged, CHECK IGN START/RUN circuit for short to ground. REPAIR as necessary. COMPLETE Misfire Monitor Repair Verification Drive Cycle (REFER to Section 2, Drive Cycles).




JF7 CHECK SUSPECT CD CIRCUIT FOR OPEN IN HARNESS

• Disconnect PCM.



• Measure resistance of suspect CD circuit between PCM harness connector pin (determined from the table) and coil on plug harness connector.

Is resistance less than 5 ohms?







Yes


No






GO to JF8.


REPAIR open circuit. COMPLETE Misfire Monitor Repair Verification Drive Cycle (REFER to Section 2, Drive Cycles).




JF8 CHECK SUSPECT CD CIRCUIT FOR SHORT TO VPWR IN HARNESS

• Key on, engine off.



• Measure voltage between suspect CD circuit at the PCM harness connector (determined from the table) and ground.

Is voltage less than 1.0 volt?







Yes


No






KEY OFF. GO to JF9.


KEY OFF. REPAIR short circuit. COMPLETE Misfire Monitor Repair Verification Drive Cycle (REFER to Section 2, Drive Cycles).




JF9 CHECK SUSPECT CD CIRCUIT FOR SHORT TO GROUND IN HARNESS

• Disconnect scan tool.



• Measure resistance between suspect CD circuit at the PCM harness connector (determined from the table) and ground.

Is resistance greater than 10,000 ohms?







Yes


No






GO toJF10.


REPAIR short circuit. If symptom or DTC is still present, GO to JF11 to check for damaged coil, otherwise COMPLETE Misfire Monitor Repair Verification Drive Cycle (REFER to Section 2, Drive Cycles).




JF10 PERFORM INTERMITTENT TEST ON SUSPECT CD CIRCUIT HARNESS

• Connect digital multimeter between suspect CD circuit at the PCM harness connector (determined from the table) and CD circuit at coil on plug harness connector.



• Wiggle and bend CD harness from PCM harness connector to coil on plug harness connector.

Did resistance fluctuate during wiggle test?







Yes


No






REPAIR intermittent fault in harness. COMPLETE Misfire Monitor Repair Verification Drive Cycle (REFER to Section 2, Drive Cycles).


REPLACE PCM. (REFER to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM)). If symptom or DTC is still present, GO to JF11 to check for damaged coil, otherwise COMPLETE Misfire Monitor Repair Verification Drive Cycle (REFER to Section 2, Drive Cycles).




JF11 CHECK SUSPECT COIL FOR DAMAGE

• Remove suspect coil (determined from the table) from spark plug.



• Connect an air gap spark tester 303-D037 (D81P-6666-A) or equivalent to a suspect coil.



• Disable fuel pump by disconnecting inertia fuel shutoff switch.



• Observe spark tester while cranking engine.

Is the spark present?







Yes


No






KEY OFF. INSPECT spark plug, REPLACE if necessary. GO to Z1.


KEY OFF. REPLACE coil. INSPECT spark plug, REPLACE if necessary. COMPLETE Misfire Monitor Repair Verification Drive Cycle (REFER to Section 2, Drive Cycles).

ECM may require a CKP relearn. Use of scanner required.

Did you just hook this up or was it working before? First batt voltage should not drop below 9.6v under load/cranking, second thing comes too mind is if your running a ballast resistor and where you have pos. wire for point less ignition-before or after ballast resistor alot of pointless ignitions want you to get the power before resistor so the ignition module has enough voltage to work with. also you can check voltage at coil during cranking to see- you need to be above about 7 volts or so. Also little known fact, if you have stater sol. on firewall/fender and you have second small terminal labeled "I" if you connect this directly to coil pos. it will apply full batt to coil during start only-by passing resistor.

sorry but their are no diadnostic codes with this number in the manufacturers codes i have
P0505....Idle Control System
P0507....Idle Control System RPM Higher Than Expected
but i have found these generic codes for you if they help

Sounds like a faulty crankshaft sensor and/or camshaft sensor. This is a diagnosis and repair job that you might want to leave up to a qualified technician unless you are very mechanically inclined and posess access to the proper tools for the job.

The problem is the body ground control module.