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Control module and output signals

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illumination
P0601 Internal Control Module Memory Check Sum Error -- Replace the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE J623, REPLACING .
-- Replace the Direct Shift Gearbox (DSG) Mechatronic -J743-. Refer to DSG TRANSMISSION MECHATRONIC -J743-, TRANSMISSION REMOVED .		 Internal check sum, incorrect - 2 Seconds
  • Continuous
  • 2 DCY
P0604 Internal Control Module Random Access Memory (RAM) Error -- Replace the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE J623, REPLACING .
-- Replace the Direct Shift Gearbox (DSG) Mechatronic -J743-. Refer to DSG TRANSMISSION MECHATRONIC -J743-, TRANSMISSION REMOVED .		 Write ability check, failed - 2 Seconds
  • Continuous
  • 2 DCY
P0605 Internal Control Module Read Only Memory (ROM) Error -- Replace the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE J623, REPLACING .
-- Replace the Direct Shift Gearbox (DSG) Mechatronic -J743-. Refer to DSG TRANSMISSION MECHATRONIC -J743-, TRANSMISSION REMOVED .		 Check, failed - 2 Seconds
  • Continuous
  • 2 DCY
P0606 ECM/PCM Processor -- Replace the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE J623, REPLACING .
-- Replace the Direct Shift Gearbox (DSG) Mechatronic -J743-. Refer to DSG TRANSMISSION MECHATRONIC -J743-, TRANSMISSION REMOVED .
  • Difference between measured calibration resistance in ECM and set value >45Ω
  • Open circuit signal voltage <0.2 V
  • Short to ground signal voltage <0.2 V
  • Short to battery + signal voltage >4.8 V
  • Check failed
  • Internal logic checksum incorrect
  • Engine torque out of range
  • Time after engine start, 40 Sec.
  • Engine speed, Idle
 50 Seconds 5 Seconds 2 Seconds
  • Multiple
  • 2 DCY
P0627 Fuel Pump "A" Control Circuit/Open -- Check the fuel pump --. Refer to FUEL PUMP ELECTRICAL, TESTING . Signal voltage 4.5-5.5 V
  • Pump relay, Commanded off
  • Engine speed, >80 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0629 Fuel Pump "A" Control Circuit High -- Check the fuel pump --. Refer to FUEL PUMP ELECTRICAL, TESTING . Signal current 0.6-1.2 A
  • Pump relay, Commanded on
  • Engine speed, >80 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0638 Throttle Actuator Control Range/Performance - Bank 1 -- Check the Throttle Valve Control Module -J338-. Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING
-- Check the Throttle Position (TP) Sensor -G79-/Accelerator Pedal Position Sensor 2 -G185-. Refer to THROTTLE POSITION SENSOR G79 AND ACCELERATOR PEDAL POSITION SENSOR 2 G185, CHECKING .
  • Time to open over reference point + 12%, > 0.14 Sec.
  • Time to open below reference point, + 3%, > 0.56 Sec.
  • TPS 1 signal voltage, not (0.27-0.77) V
  • TPS 2 signal voltage, not (4.26-4.73) V
  • Ignition, On
  • Engine speed, 0 RPM
  • IAT, >5.3 °C
  • Vehicle speed, 0 MPH
  • ECT, >5.3 °C
 0.14 Seconds 0.56 Seconds 0.3 Seconds
  • Continuous
  • 2 DCY
P0685 ECM/PCM Power Relay Control Circuit/Open -- Check the Throttle Valve Control Module -J338-. Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING
-- Check the Throttle Position (TP) Sensor -G79-/Accelerator Pedal Position Sensor 2 -G185-. Refer to THROTTLE POSITION SENSOR G79 AND ACCELERATOR PEDAL POSITION SENSOR 2 G185, CHECKING .
  • Control voltage, >0.7 V
 Sensed circuit voltage, <3 V 0.5 Seconds
  • Continuous
  • 2 DCY
P0686 ECM/PCM Power Relay Control Circuit Low -- Check the voltage supply for Engine Control Module (ECM) -J623-. Refer to VOLTAGE SUPPLY, CHECKING .
-- Check the activation of Engine Control Module (ECM) Power Supply Relay -J271-. Refer to VOLTAGE SUPPLY, CHECKING .
  • Control voltage, <0.5 V
 Sensed circuit voltage, >5.5 V 0.5 Seconds
  • Continuous
  • 2 DCY
P0687 ECM/PCM Power Relay Control Circuit High -- Check the voltage supply for Engine Control Module (ECM) -J623-. Refer to VOLTAGE SUPPLY, CHECKING .
-- Check the activation of Engine Control Module (ECM) Power Supply Relay -J271-. Refer to VOLTAGE SUPPLY, CHECKING .
  • Control voltage, >4 V
 Sensed circuit voltage, <3 V 0.5 Seconds
  • Continuous
  • 2 DCY
P0688 ECM/PCM Power Relay Sense Circuit -- Check the voltage supply for Engine Control Module (ECM) -J623-. Refer to VOLTAGE SUPPLY, CHECKING .
-- Check the activation of Engine Control Module (ECM) Power Supply Relay -J271-. Refer to VOLTAGE SUPPLY, CHECKING .
  • Sense voltage, <3.0 V
  • Main relay, commanded on
 0.5 Seconds
  • Continuous
  • 2 DCY
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