This is the wiring for the Magneti Marelli (EW10J4 Petrol Engine) as per your Specs:
(I've also changed the title of the thread as we know it doesn't have a CPH and it could be misleading)
If you could localise where you are applying the heat and eliminate the areas that do not have an effect using the diagram below, maybe you can identify the likely location / harness / connector giving the problem.
I would certainly check out the pins on the connectors to see if any are loose or shorter than the others too.
There should be 3 main connectors on the engine ECU, identified in the diagram along the sides of [1320]
- 32V NR (32 Pin Black)
[*[48V MR (48 Pin Brown)
- 32V GR (32 Pin Grey)
Code | Component / Wire |
1320 | Engine ECU |
BM34 | Engine Slave Unit 34 Fuse(S) |
1313 | Engine Speed Sensor |
1253 | All Or Nothing Solenoid Valve (EGR) |
1350 | Upstream Oxygen Sensor |
1351 | Downstream Oxygen Sensor |
1270 | Carburettor Or Throttle Housing Heater Resistor |
1334 | No. 4 Cylinder Injector |
1333 | No. 3 Cylinder Injector |
1332 | No. 2 Cylinder Injector |
1331 | No. 1 Cylinder Injector |
1312 | Inlet Air Pressure Sensor |
1115 | Cylinder / Reference Sensor |
1215 | Canister Discharge Electrovalve |
1240 | Induction Air Temperature Sensor |
1135 | Ignition Coil |
1220 | Engine Coolant Temperature Sensor |
1120 | Knock Sensor |
1211 | Fuel Gauge Pump |
7306 | Cruise Control Safety Switch (Clutch) |
7113 | Power Steering Stop Sensor |
1262 | Motorised Throttle |
1261 | Accelerator Pedal Position Sensor |
C001 | Agnostic Connector |
0004 | Instrument Panel |
BSI1 | Built-In Systems Interface |
CA00 | Ignition Switch / |