Troubleshooting Flowchart — Mainshaft Speed Sensor
Contents
1. Troubleshooting Flowchart Mainshaft Speed Sensor aa NOTE Code P0715 15 on the PCM doesn t OBD I Scan Tool indicates Code always mean there s an electrical problem in P0715 Disconnected mainshaft speed the mainshaft or countershaft speed sensor Self diagnosis indicator light sensor connector circuit code P0715 15 may also indicate a blinks fifteen times Short or open in mainshaft speed mechanical problem in the transmission sensor wire Check the mainshaft and counter shaft speed sensor installation Faulty mainshaft speed sensor Are the mainshaft and counter shaft speed sensor installed prop erly NO i Reinstall and recheck YES MAINSHAFT SPEED SENSOR CONNECTOR Measure Mainshaft Speed Sen sor Resistance at the Sensor Con nector 1 Disconnect the 2P connector from the mainshaft speed sen sor connector Measure the resistance of the mainshaft speed sensor TERMINAL SIDE OF MALE TERMINALS Is the resistance 400 600 9 NO Replace the mainshaft speed sen sor _ YES PCM CONNECTOR B 25P Check Mainshaft Speed Sensor for a Short Circuit 1 Disconnect the B 25P con nector from the PCM ORN BLU 2 Check for continuity between body ground and B15 termi nal and the B 1 4 terminal indi vidually I3l4 isl 8 lt lt 99102113 14 15 16 17 18 22 t23l2425 WHT BLU Repair short in the wires between the B15 and B14 termin2. als and the mainshaft speed sensor YES Is there continuity NO WIRE SIDE OF FEMALE TERMINALS Topage 14 70 cont d 14 69 Electrical Troubleshooting Troubleshooting Flowchart Mainshaft Speed Sensor cont d From page 14 69 PCM CONNECTOR B 25P Measure Mainshaft Speed Sen sor Resistance 1 Connect the mainshaft speed sensor 2P connector 2 Measure the resistance between the B15 and B14 ter minals ORN BLU WHT BLU YES Run the Electrical Troubleshooting WIRE SIDE OF FEMALE TERMINALS Flowchart for code P0720 code 9 Check for loose PCM connectors If NO necessary substitute a known good PCM and recheck MAINSHAFT SPEED SENSOR CONNECTOR Check NM Wire Continuity 1 Disconnect the 2P connector from the mainshaft speed sensorconnector Check for continuity between the B15 terminal and the No 1 terminal of the mainshaft speed sensor connector NO Repair open in the wire between Is there continuity the B15 terminal and the main shaftspeed sensor YES Check NMSG Wire Continuity Check for continuity between the B14 terminal and the No 2 termi nal of the mainshaft speed sen sor connector NO Repair open in the wire between Is there continuity the B14 terminal and the main shaft speed sensor YES Check for loose PCM connectors If necessary substitute a known good PCM and recheck 14 70
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