Mechanics

WHAT CAUSES A NO SPARK TO ALL IGNITION COILS

2002 Nissan Pathfinder • 100,000 miles

The suv was running fine till it over heated, the top head gasket was replaced then engine cranks but no spark, no signal coming from ecu. I scan the ecu gave me crankshaft sensor, I replaced sensor code is gone, know I'm getting

PENDING CODES

P0340 16
P0340 Camshaft Position Sensor Circuit Malfunction

P0115 16
P0115 Engine Coolant Temperature Circuit

P1136 16
P1136 Control Box Fan Circuit Malfunction (Ford)
P1136 O2 Sensor Heater Circuit High Voltage (Bank 1 Sensor 1) (BMW)
P1136 O2 Sensor Heater 1/2 Element Resistance Out of Range (Chrysler)
P1136 5 volt reference 2 circuit, or O2 sensor bank 1 sensor 1 rich (GM)
P1136 HO2S Bank 1 Sensor 1 Heater Circuit High Input (Mazda)
P1136 Fan Control Circuit Malfunction (Jaguar)
P1136 Long Term Fuel Trim Add. Fuel B1 System Too Lean (VW)
P1136 Long Term Fuel Trim Add. Fuel, Bank1 System too Lean (Audi)

security light is working fine.

Pleas advise
Avatar
Ahmad Jamal
July 18, 2012.




Top head gasket? Is this a 4 cylinder or v-6

Roy

ASEMaster6371
Jul 18, 2012.
Sorry Roy, it's head gasket, and it a v6 3.5 L se

Tiny
Ahmad Jamal
Jul 18, 2012.
Just one? You should have done both but thats ok.

Are all powers and grounds hooked up? Is there 12 volts to the coils?
AD

ASEMaster6371
Jul 18, 2012.
Yes all grounds are hooked up, when ignition is on I get 12 volts to coil number one only the other 5 coils no power, when cranking the engine coil number 1 doesn't even spark.

Tiny
Ahmad Jamal
Jul 18, 2012.
I also reset the ecu the same codes come back, and I checked all the fuses.

Tiny
Ahmad Jamal
Jul 18, 2012.
The 12 volts comes from the fuse box for the feed to the coils. It sounds like a harness issue here with all the body codes.

Did it ever run?

Roy

ASEMaster6371
Jul 18, 2012.
Than you very much Roy,
I appreciate your help.
So I should have 12 volts to each coil when the ignition is on, right?

Tiny
Ahmad Jamal
Jul 18, 2012.
It was working fine before replacing the head gasket, maybe in the process something got damaged in the wiring harness, I'm going to test the harness.

Tiny
Ahmad Jamal
Jul 18, 2012.
Yes, 12 to all. Inspect the harness, maybe you got it trapped in something somewhere

Roy

ASEMaster6371
Jul 18, 2012.

AD