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2011 Ford Fiesta developed PCM codes P0689, P2510, P0562 and P2610 after not using over the winter.

413 Views 3 Replies 3 Participants Last post by  Cbell
Hi, as the title suggests, I had my Fiesta out over the winter, I started it a few times over winter with no issues. However, now spring is here, I get the following codes:

P0689
Definition
:
ECM/PCM Power Relay Sense Circuit Low
Description:
This DTC sets when the ISP-R and the INJPWRM circuit voltages do not correspond for a calibrated period of time.
Cause:
  • Ignition circuit fuse
  • ISP-R circuit open
  • ISP-R circuit short to ground
  • VPWR circuit short to voltage
  • INJPWR circuit short to voltage
  • Damaged ignition switch
  • Damaged fuel pump relay
  • Damaged PCM power relay
Diagnosis:
The INJPWRM PID voltage reading should be 0 volts when the ignition is in the OFF, ACC or LOCK position.

P2510
Definition
:
ECM / PCM Power Relay Sense Circuit Range/Performance
Description:
The ISP-R and the INJPWRM circuits are monitored for correlation. This DTC sets when the voltage on the ISP-R and the INJPWRM circuit voltages do not correspond for a calibrated period of time.
Cause:
  • Ignition circuit fuse
  • ISP-R circuit open
  • ISP-R circuit short to ground
  • Fuel injector VPWR circuit short to voltage
  • Fuel injector INJPWR circuit short to voltage
  • Damaged ignition switch
  • Damaged fuel pump relay
  • Damaged PCM power relay
Diagnosis:
The INJPWRM PID voltage reading should be 0 volts when the ignition is in the OFF, ACC or LOCK position.

P0562
Definition
:
System Voltage Low: No Sub Type Information
Cause:
This DTC sets wsets when the TCCM detects less than 9 volts of battery voltage for 5 seconds or more at TCCM .Failure Type:No Sub Type InformationThis sub type is used for failures where the base DTC text string provides the complete description of the failure itself (no Category and no Sub Type information used, e.g. emissions-related DTC (012700 hex): P0127 Intake Air Temperature Too High).


P2610
Definition
:
ECM/PCM Engine Off Timer Performance
Description:
This DTC sets when an error in the internal PCM engine off timer processor occurs.Cause:
  • KAPWR circuit open
  • KAPWR circuit short to ground
  • Battery cables loose
  • Intermittent battery cable connections
  • Engine cooling system concerns
  • Damaged Engine Coolant Temperature (ECT) sensor
Diagnosis:
Verify the PCM is at the latest calibration level.
Related Service Bulletins:

I have replaced the battery and was getting about 3Amps of current draw when the car was idle. I traced this to F32 a 20Amp fuse for BCM – battery saver, horn.
However, after charging the battery to 100%. I still get those PCM codes.

Any ideas on the next troubleshooting steps?
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Hi, as the title suggests, I had my Fiesta out over the winter, I started it a few times over winter with no issues. However, now spring is here, I get the following codes:

P0689
Definition
:
ECM/PCM Power Relay Sense Circuit Low
Description:
This DTC sets when the ISP-R and the INJPWRM circuit voltages do not correspond for a calibrated period of time.
Cause:
  • Ignition circuit fuse
  • ISP-R circuit open
  • ISP-R circuit short to ground
  • VPWR circuit short to voltage
  • INJPWR circuit short to voltage
  • Damaged ignition switch
  • Damaged fuel pump relay
  • Damaged PCM power relay
Diagnosis:
The INJPWRM PID voltage reading should be 0 volts when the ignition is in the OFF, ACC or LOCK position.

P2510
Definition
:
ECM / PCM Power Relay Sense Circuit Range/Performance
Description:
The ISP-R and the INJPWRM circuits are monitored for correlation. This DTC sets when the voltage on the ISP-R and the INJPWRM circuit voltages do not correspond for a calibrated period of time.
Cause:
  • Ignition circuit fuse
  • ISP-R circuit open
  • ISP-R circuit short to ground
  • Fuel injector VPWR circuit short to voltage
  • Fuel injector INJPWR circuit short to voltage
  • Damaged ignition switch
  • Damaged fuel pump relay
  • Damaged PCM power relay
Diagnosis:
The INJPWRM PID voltage reading should be 0 volts when the ignition is in the OFF, ACC or LOCK position.

P0562
Definition
:
System Voltage Low: No Sub Type Information
Cause:
This DTC sets wsets when the TCCM detects less than 9 volts of battery voltage for 5 seconds or more at TCCM .Failure Type:No Sub Type InformationThis sub type is used for failures where the base DTC text string provides the complete description of the failure itself (no Category and no Sub Type information used, e.g. emissions-related DTC (012700 hex): P0127 Intake Air Temperature Too High).


P2610
Definition
:
ECM/PCM Engine Off Timer Performance
Description:
This DTC sets when an error in the internal PCM engine off timer processor occurs.Cause:
  • KAPWR circuit open
  • KAPWR circuit short to ground
  • Battery cables loose
  • Intermittent battery cable connections
  • Engine cooling system concerns
  • Damaged Engine Coolant Temperature (ECT) sensor
Diagnosis:
Verify the PCM is at the latest calibration level.
Related Service Bulletins:

I have replaced the battery and was getting about 3Amps of current draw when the car was idle. I traced this to F32 a 20Amp fuse for BCM – battery saver, horn.
However, after charging the battery to 100%. I still get those PCM codes.

Any ideas on the next troubleshooting steps?
From What you describe it sounds like a mouse chewed a wire, more likely a ground while it sat in the cold. I would check every wire for damage
From What you describe it sounds like a mouse chewed a wire, more likely a ground while it sat in the cold. I would check every wire for damage
Thanks, I will take a look.
So far I have PWR on the PCM at pins 10 and 8
Also have GND's on Pins 35, 36, 47 and 48 of the PCM

But when I turn the key to start, I am not getting 12V to F16 and consequently all the HOT BU-GN cables:
Rectangle Slope Schematic Font Parallel
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Yeah probably a mouse. The damn wires are coated in a soy product instead of plastic. Dumb engineering
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