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Diagnostic Trouble Code (DTC) P0601

Control Module Read Only Memory (ROM)

Circuit Description

This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM).

Conditions for Running the DTC

Conditions for Setting the DTC

Action Taken When the DTC Sets

Conditions for Clearing the MIL/DTC

DTC P0601 - Control Module Read Only Memory (ROM)

Step Action Value(s) Yes No
1
Perform the Diagnostic System Check.
Is the system check complete?
-
Go to Step 2
Go to "Diagnostic System Check"
2
  1. Turn the ignition switch to LOCK.
  2. Install a scan tool to the data link connector (DLC).
  3. Turn the ignition switch to ON.
  4. Observe DTC information with a scan tool.
Did the DTC fail this ignition?
-
Go to Step 3
Go to Step 4
3
Replace the ECM.
Is the replace complete?
-
Go to Step 4
-
4
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Setting the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 2
Go to Step 5
5
Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?
-
Go to applicable DTC table
System OK

Diagnostic Trouble Code (DTC) P0604

Control Module Random Access Memory (RAM)

Circuit Description

This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM).

Conditions for Running the DTC

Conditions for Setting the DTC

Action Taken When the DTC Sets

Conditions for Clearing the MIL/DTC

DTC P0604 - Control Module Random Access Memory (RAM)

Step Action Value(s) Yes No
1
Perform the Diagnostic System Check.
Is the system check complete?
-
Go to Step 2
Go to "Diagnostic System Check"
2
  1. Turn the ignition switch to LOCK.
  2. Install a scan tool to the data link connector (DLC).
  3. Turn the ignition switch to ON.
  4. Observe DTC information with a scan tool.
Did the DTC fail this ignition?
-
Go to Step 3
Go to Step 4
3
Replace the ECM.
Is the replace complete?
-
Go to Step 4
-
4
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Setting the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 2
Go to Step 5
5
Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?
-
Go to applicable DTC table
System OK

Diagnostic Trouble Code (DTC) P0606

Control Module Internal Performance

Circuit Description

The Engine Control Module (ECM) is the control center of the fuel injection system. It constantly looks at the information from various sensors, and controls the systems that affect vehicle performance. The ECM also performs the diagnostic function of the system. It can recognize operational problems, alert the driver through the Malfunction Indicator Lamp (MIL) (Check Engine), and store a Diagnostic Trouble Code (DTC) or DTCs which identify the problem areas to aid the technician in making repairs. An Electrically Erasable Programmable Read Only Memory (EEPROM) is used to house the program information and the calibrations required for engine, transmission, and powertrain diagnostics operation. The Diagnostic Trouble Code (DTC) will stored, when the ECM detects SPI communication between main CPU and output driver I/C is corrupted.

Conditions for Running the DTC

Conditions for Setting the DTC

Action Taken When the DTC Sets

Conditions for Clearing the MIL/DTC

DTC P0606 - Control Module Internal Performance

Step Action Value(s) Yes No
1
Perform the Diagnostic System Check.
Is the system check complete?
-
Go to Step 2
Go to "Diagnostic System Check"
2
  1. Turn the ignition switch to LOCK.
  2. Install a scan tool to the data link connector (DLC).
  3. Turn the ignition switch to ON.
  4. Observe DTC information with a scan tool.
Did the DTC fail this ignition?
-
Go to Step 3
Go to Step 4
3
Replace the ECM.
Is the replace complete?
-
Go to Step 4
-
4
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Setting the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 2
Go to Step 5
5
Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?
-
Go to applicable DTC table
System OK

Diagnostic Trouble Code (DTC) P0615

Starter Relay Control Circuit

Circuit Description

The engine control relay applies battery voltage to the coil circuit of the starter relay through the ignition circuit. When the ignition switched is turned to the Start position and all the conditions required to enable an engine cranking is met, the ECM grounds the starter relay control circuit to activate the starter relay. When active, the starter relay applies battery voltage to the starter motor solenoid control circuit to operate the starter motor. The ECM monitors the control circuit of the starter relay for conditions that are incorrect for the commanded state. A starter relay control circuit DTC sets if the ECM detects a fault condition in the starter relay control circuit.

Conditions for Running the DTC

Conditions for Setting the DTC

Action Taken When the DTC Sets

Conditions for Clearing the MIL/DTC

DTC P0615 - Starter Relay Control Circuit

Step Action Value(s) Yes No
1
Did you perform the Diagnostic System Check?
-
Go to Step 2
Go to "Diagnostic System Check"
2
  1. Switch off the ignition for 30 seconds.
  2. Operate the vehicle within the conditions for running the DTC.
  3. Using the Scan Tool, select the DTC display function.
Did the DTC fail this ignition?
-
Go to Step 3
-
3
Check for a fault condition in the following systems which can disable the starting system:
  • Starting System
  • Theft Deterrent System
Did you find and correct the condition?
-
Go to Step 10
Go to Step 4
4
  1. Remove the starter relay.
  2. Connect a test lamp between the ignition circuit of the starter relay and a good ground.
  3. Switch on the ignition.
Does the test lamp illuminate?
-
Go to Step 5
Go to Step 6
5
  1. Connect a test lamp between the control circuit of the starter relay and a 12 V.
  2. Turn the ignition switch to the Start position and then release it back to the on position.
Does the test lamp turn on when the ignition switch is turned to the Start position and then turn off when the ignition switch returns to the on position?
-
Go to Step 5
Go to Step 6
6
Repair the ignition voltage circuit of the starter relay for a high resistance or open circuit fault condition.
Did you complete the replacement?
-
Go to Step 10
-
7
Test the control circuit of the starter relay for a high resistance, open circuit, short to ground or a short to voltage fault condition.
Did you find and correct the condition?
-
Go to Step 10
Go to Step 9
8
Replace the starter relay.
Did you complete the replacement?
-
Go to Step 10
-
9
Replace the ECM.
Did you complete the replacement?
-
Go to Step 10
-
10
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Setting the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 2
Go to Step 11
11
Check if any additional DTCs are set.
Are there any DTCs that have not been diagnosed?
-
Go to applicable DTC table
System OK

Diagnostic Trouble Code (DTC) P0616

Starter Relay Control Circuit Low Voltage

Circuit Description

The engine control relay applies battery voltage to the coil circuit of the starter relay through the ignition circuit. When the ignition switched is turned to the Start position and all the conditions required to enable an engine cranking is met, the ECM grounds the starter relay control circuit to activate the starter relay. When active, the starter relay applies battery voltage to the starter motor solenoid control circuit to operate the starter motor. The ECM monitors the control circuit of the starter relay for conditions that are incorrect for the commanded state. A starter relay control circuit DTC sets if the ECM detects a fault condition in the starter relay control circuit.

Conditions for Running the DTC

Conditions for Setting the DTC

Action Taken When the DTC Sets

Conditions for Clearing the MIL/DTC

DTC P0616 - Starter Relay Control Circuit Low Voltage

Step Action Value(s) Yes No
1
Did you perform the Diagnostic System Check?
-
Go to Step 2
Go to "Diagnostic System Check"
2
  1. Switch off the ignition for 30 seconds.
  2. Operate the vehicle within the conditions for running the DTC.
  3. Using the Scan Tool, select the DTC display function.
Did the DTC fail this ignition?
-
Go to Step 3
-
3
Check for a fault condition in the following systems which can disable the starting system:
  • Starting System
  • Theft Deterrent System
Did you find and correct the condition?
-
Go to Step 10
Go to Step 4
4
  1. Remove the starter relay.
  2. Connect a test lamp between the ignition circuit of the starter relay and a good ground.
  3. Switch on the ignition.
Does the test lamp illuminate?
-
Go to Step 5
Go to Step 6
5
  1. Connect a test lamp between the control circuit of the starter relay and a 12 V.
  2. Turn the ignition switch to the Start position and then release it back to the on position.
Does the test lamp turn on when the ignition switch is turned to the Start position and then turn off when the ignition switch returns to the on position?
-
Go to Step 5
Go to Step 6
6
Repair the ignition voltage circuit of the starter relay for a high resistance or open circuit fault condition.
Did you complete the replacement?
-
Go to Step 10
-
7
Test the control circuit of the starter relay for a high resistance, open circuit, short to ground fault condition.
Did you find and correct the condition?
-
Go to Step 10
Go to Step 9
8
Replace the starter relay.
Did you complete the replacement?
-
Go to Step 10
-
9
Replace the ECM.
Did you complete the replacement?
-
Go to Step 10
-
10
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Setting the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 2
Go to Step 11
11
Check if any additional DTCs are set.
Are there any DTCs that have not been diagnosed?
-
Go to applicable DTC table
System OK

Diagnostic Trouble Code (DTC) P0617

Starter Relay Control Circuit High Voltage

Circuit Description

The engine control relay applies battery voltage to the coil circuit of the starter relay through the ignition circuit. When the ignition switched is turned to the Start position and all the conditions required to enable an engine cranking is met, the ECM grounds the starter relay control circuit to activate the starter relay. When active, the starter relay applies battery voltage to the starter motor solenoid control circuit to operate the starter motor. The ECM monitors the control circuit of the starter relay for conditions that are incorrect for the commanded state. A starter relay control circuit DTC sets if the ECM detects a fault condition in the starter relay control circuit.

Conditions for Running the DTC

Conditions for Setting the DTC

Action Taken When the DTC Sets

Conditions for Clearing the MIL/DTC

DTC P0617 - Starter Relay Control Circuit High Voltage

Step Action Value(s) Yes No
1
Did you perform the Diagnostic System Check?
-
Go to Step 2
Go to "Diagnostic System Check"
2
  1. Switch off the ignition for 30 seconds.
  2. Operate the vehicle within the conditions for running the DTC.
  3. Using the Scan Tool, select the DTC display function.
Did the DTC fail this ignition?
-
Go to Step 3
-
3
Check for a fault condition in the following systems which can disable the starting system:
  • Starting System
  • Theft Deterrent System
Did you find and correct the condition?
-
Go to Step 10
Go to Step 4
4
  1. Remove the starter relay.
  2. Connect a test lamp between the ignition circuit of the starter relay and a good ground.
  3. Switch on the ignition.
Does the test lamp illuminate?
-
Go to Step 5
Go to Step 6
5
  1. Connect a test lamp between the control circuit of the starter relay and a 12 V.
  2. Turn the ignition switch to the Start position and then release it back to the on position.
Does the test lamp turn on when the ignition switch is turned to the Start position and then turn off when the ignition switch returns to the on position?
-
Go to Step 5
Go to Step 6
6
Repair the ignition voltage circuit of the starter relay for a high resistance or open circuit fault condition.
Did you complete the replacement?
-
Go to Step 10
-
7
Test the control circuit of the starter relay for a high resistance or a short to voltage fault condition.
Did you find and correct the condition?
-
Go to Step 10
Go to Step 9
8
Replace the starter relay.
Did you complete the replacement?
-
Go to Step 10
-
9
Replace the ECM.
Did you complete the replacement?
-
Go to Step 10
-
10
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Setting the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 2
Go to Step 11
11
Check if any additional DTCs are set.
Are there any DTCs that have not been diagnosed?
-
Go to applicable DTC table
System OK


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