Hello everyone,
I own a 98 nissan patrol which has the tb45e engine. The defect is I have no spark at the spark plugs. Whilst driving home one night the cars' engine started to surge but came good and I made it home- the next morning it would not start- engine cranks but does not fire.
I originally thought it was a fuel problem and have replaced the fuel pump and filters and I know I am getting fuel at the rail. When it did not start after this I did a spark test and found there was none- I have carried out the voltage and resistance checks on the distributor assy as per the nissan manual(DTC 21) and (DTC 11) and can not find any defects except that I can not get a pulse from the ecm to the distributor(although I only have a basic multimeter that does not read freq but it is showing 0 volts at the #1 pin on the distributor assy when cranking engine.
When I place a an led on the fuel injector harness and I bypass the fuel pump relay I get a pulse to the injectors which makes me think the camshaft position sensor is doing its job and the problem is with the ecm or nats.
The park/neutral position switch checks out ok and the only fault code showing before I deleted it was for a knock sensor.
I have checked power/ground circuits,fuses,relays,joint connectors with no defects.
The only other problem I can find is that battery voltage drops to 7 volts at ecm terminals 49,59 and 109 with everything connected.
Voltages at pins 57,58 and 43 show battery voltage.
The red light indicator for nats goes out as normal upon start.
It's an auto as well.
Anyone had something similar or any suggestions would be appreciated.
Cheers