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Home >> Ford >> 2010 >> Expedition EL 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> DTC Diagnosis >> DTC P0690: Electronic Control Module (ECM)/Powertrain Control Module (Pcm) Power Relay Sense Circuit High
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DTC P0690: Electronic Control Module (ECM)/Powertrain Control Module (Pcm) Power Relay Sense Circuit High

DTC P0690: ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY SENSE CIRCUIT HIGH

Description:  The powertrain control module (PCM) monitors the voltage on the ignition switch position run (ISP-R) and the fuel injector power monitor (INJPWRM) circuits. This DTC sets when the voltage on the ISP-R and the INJPWRM circuit voltages do not correspond for a calibrated period of time.
Possible Causes: 
  • ISP-R circuit short to voltage in the harness
  • Fuel injector voltage power (VPWR) circuit open
  • Fuel injector power monitor (INJPWR) circuit open
  • Damaged ignition switch
  • Damaged fuel pump relay
  • Damaged PCM power relay
Diagnostic Aids:  The INJPWRM PID voltage should be greater than 10.5 V when the ignition is in the ON position.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST B .