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techtalk:evo:elec01 [2020/04/29 19:29] ixl2relax [Battery Charge Level] |
techtalk:evo:elec01 [2020/05/11 00:14] hippysmack [5 Volt Sensor Supply] |
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| | **2014-later CANbus Engine Control Module**\\ \\ ECM Connector 2 - Pin 9 is +5v Output (RED/White Wire)\\ ECM Connector 2 - Pin 7 is 5v Sensor Ground (BLACK/White Wire) | **5v power is fed from ECM Connector 2 - Pin 9 to all of these connections:**\\ VSS Connector 65B - Pin A (R/W Wire)\\ -- (VSS uses Powertrain Ground Point (BK/GN Wire)- Not 5v Sensor Ground)\\ JSS - Jiffy Stand Sensor Connector 133B - Pin 1 (R/W Wire)\\ -- Uses Powertrain Ground (BK/GN Wire)\\ ---- (This connector on all models may have an issue due to its location)\\ Passes Thru Engine Harness Connector 145A/B - Pin 8 (R/W Wire) to:\\ TMAP Sensor Connector 80B - Pin 3 (R/W Wire)\\ TPS Sensor Connector 88B - (2014 its on Pin 1 (later years its on Pin B)(R/W Wire))\\ \\ **The following devices are grounded thru the ECM on Connector 2 - Pin 7:**\\ ETS - Engine Temp Sensor - Pin B (B/W to TAN Wire)\\ Front O2S - Oxygen Sensor - (138A/B)Pin 4 - (B/W to BLACK Wire)\\ Rear O2S - Oxygen Sensor - (137A/B)Pin 4 - (B/W to BLACK Wire)\\ Passes Thru Engine Harness Connector 145A/B - Pin 6 (B/W Wire)\\ TMAP - Temp/Manifold Abs Pressure Sensor - Pin 1 - (B/W Wire)\\ TPS - Throttle Position Sensor - (2014 its on Pin 2 (later years its on Pin A) (B/W Wire))\\ \\ ECM Connector 1 & Connector 2 - Pin 10 are both listed as Sensor Grounds (BK/GN)\\ ---- These are General Grounds - They go to the Powertrain Ground Point | | | **2014-later CANbus Engine Control Module**\\ \\ ECM Connector 2 - Pin 9 is +5v Output (RED/White Wire)\\ ECM Connector 2 - Pin 7 is 5v Sensor Ground (BLACK/White Wire) | **5v power is fed from ECM Connector 2 - Pin 9 to all of these connections:**\\ VSS Connector 65B - Pin A (R/W Wire)\\ -- (VSS uses Powertrain Ground Point (BK/GN Wire)- Not 5v Sensor Ground)\\ JSS - Jiffy Stand Sensor Connector 133B - Pin 1 (R/W Wire)\\ -- Uses Powertrain Ground (BK/GN Wire)\\ ---- (This connector on all models may have an issue due to its location)\\ Passes Thru Engine Harness Connector 145A/B - Pin 8 (R/W Wire) to:\\ TMAP Sensor Connector 80B - Pin 3 (R/W Wire)\\ TPS Sensor Connector 88B - (2014 its on Pin 1 (later years its on Pin B)(R/W Wire))\\ \\ **The following devices are grounded thru the ECM on Connector 2 - Pin 7:**\\ ETS - Engine Temp Sensor - Pin B (B/W to TAN Wire)\\ Front O2S - Oxygen Sensor - (138A/B)Pin 4 - (B/W to BLACK Wire)\\ Rear O2S - Oxygen Sensor - (137A/B)Pin 4 - (B/W to BLACK Wire)\\ Passes Thru Engine Harness Connector 145A/B - Pin 6 (B/W Wire)\\ TMAP - Temp/Manifold Abs Pressure Sensor - Pin 1 - (B/W Wire)\\ TPS - Throttle Position Sensor - (2014 its on Pin 2 (later years its on Pin A) (B/W Wire))\\ \\ ECM Connector 1 & Connector 2 - Pin 10 are both listed as Sensor Grounds (BK/GN)\\ ---- These are General Grounds - They go to the Powertrain Ground Point | | ||
| + | ====== Tip For Hunting Down Short Circuits ====== | ||
| + | If you are attempting to locate a short circuit, rather than continuing to replace fuses while looking for the | ||
| + | problem, you can use a test light in place of the fuse at the fuse block. ((HD Tech Tip #48 dated August 1998)) Start removing one load at a time or | ||
| + | wiggle wires. When the light goes out, examine the wiring on the portion of circuit last disconnected for the | ||
| + | cause. | ||
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