Hi guys I have a real quick question, I am chasing down a no spark condition and just need a verification on what voltage the Crankshaft Position sensor should be receiving from the ECU and what it should put out. Also, is there voltage present with key in on Position with vehicle off? Already did the ohms test as well as the A/C voltage, suspecting a wiring harness issue so need a reference. This is on a 2.5 Renix System with 2 wire CPS, Thanks!
The wt/bk wire is sensor ground through ECU pin 27.
The red wire is the sensor input.
If its just a two wire, I think its just a pulse generator. ohms between A and B should be 200 +/- 75 when engine is hot. If not, replace sensor.
Well I tested it the unit cold and it sits at about 205 cold, other one is at 212(I keep a spare). However since I can't get it to start due to no spark, it's impossible to get it to test hot. So the voltage does not matter like it does on the HO 3 wire CPS?
How are you checking for voltage? Black to ground and red to each wire? And reading three volts off either?
Yes sir, black to ground and negative terminal, positive coming off both the input and output wires going into the CPS. Same voltage on both. At wits end honestly, going to just take it in to a Jeep specialist shop.
Could a bad distributor be the cause of a no spark, even though there's no Camshaft Sensor on these 2.5 Renix models? At this point, the Ignition Control Module is new as well as a new Coil. Plus tested the CPS and my spare CPS and both test good ohms, 212 and 207 respectively, which is good according to what I've read.