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Hi Everyone,
Been working on this problem for a couple of days. I recently rebuilt my engine in my 2009 Subaru Forester XT F4-2.5L SOHC ej25. After getting everything buttoned up I got a crank no start. Cleared Codes> Codes came back : p0108, p0118, p0123, p0198, p0223, p0328.
p0108- Map Sensor HIGH INPUT
p0118- Engine Coolant Temp Sensor Circuit HIGH INPUT
p0123- Throttle/ Pedal Position Sensor A circuit HIGH INPUT
p0223- Throttle/ Pedal Position Sensor B circuit HIGH INPUT
p0198- Engine Oil Temp Sensor Circuit HIGH INPUT
p0328- Knock Sensor 1 Circuit HIGH INPUT
I got an ECM pinout Voltage Chart, Wiring diagrams for the Engine harness, and I found that all of the sensors with codes related to them use the same ground wire coming from the ECM. A Blue/White wire in the Engine harness. Yellow/Green wire from plug to ECM.
So far I've tested the Sensor Ground wire with the engine harness unplugged ~ 8-9volts (Should be 0v obviously) ,
with the engine harness plugged into the ECM it shows 4.7volts.
Every sensor wire also shows 4.7volts when everything is plugged in.
When Key is turned to ON position MAP Sensor should read 3.4-3.8v
Oil Temp Sensor 1-1.4v
Coolant Temp 1-1.4v
Knock Sensor 2.5v
Electronic Throttle Control Sensor wire 1 0.64-0.72v 3.96v FULLY OPENED THROTTLE
Electronic Throttle Control Sensor wire 2. 1.51-1.58v 4.17v FULLY OPENED THROTTLE
I also tested the two V V L Pressure Switches for comparison and both read normal.
Same with the other Ground Pin connected to the same ECM Plug.
I'm not sure if I can post the wiring diagrams and ECM pinout voltage diagram on here, but let me know. I can attach if needed.
Any other info needed plz ask.
I'm hoping I didn't accidentally fry the ECM by accident when doing the rebuild.
Thanks.
Been working on this problem for a couple of days. I recently rebuilt my engine in my 2009 Subaru Forester XT F4-2.5L SOHC ej25. After getting everything buttoned up I got a crank no start. Cleared Codes> Codes came back : p0108, p0118, p0123, p0198, p0223, p0328.
p0108- Map Sensor HIGH INPUT
p0118- Engine Coolant Temp Sensor Circuit HIGH INPUT
p0123- Throttle/ Pedal Position Sensor A circuit HIGH INPUT
p0223- Throttle/ Pedal Position Sensor B circuit HIGH INPUT
p0198- Engine Oil Temp Sensor Circuit HIGH INPUT
p0328- Knock Sensor 1 Circuit HIGH INPUT
I got an ECM pinout Voltage Chart, Wiring diagrams for the Engine harness, and I found that all of the sensors with codes related to them use the same ground wire coming from the ECM. A Blue/White wire in the Engine harness. Yellow/Green wire from plug to ECM.
So far I've tested the Sensor Ground wire with the engine harness unplugged ~ 8-9volts (Should be 0v obviously) ,
with the engine harness plugged into the ECM it shows 4.7volts.
Every sensor wire also shows 4.7volts when everything is plugged in.
When Key is turned to ON position MAP Sensor should read 3.4-3.8v
Oil Temp Sensor 1-1.4v
Coolant Temp 1-1.4v
Knock Sensor 2.5v
Electronic Throttle Control Sensor wire 1 0.64-0.72v 3.96v FULLY OPENED THROTTLE
Electronic Throttle Control Sensor wire 2. 1.51-1.58v 4.17v FULLY OPENED THROTTLE
I also tested the two V V L Pressure Switches for comparison and both read normal.
Same with the other Ground Pin connected to the same ECM Plug.
I'm not sure if I can post the wiring diagrams and ECM pinout voltage diagram on here, but let me know. I can attach if needed.
Any other info needed plz ask.
I'm hoping I didn't accidentally fry the ECM by accident when doing the rebuild.
Thanks.