LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 27 (Engine Controls - 5.7L - Diagnosis (DTC P0601- P2135)) >> Engine Controls Diagnosis >> DTC P0650 >> Conditions for Clearing the MIL/DTC

Conditions for Clearing the MIL/DTC

WARNING: This page is about a different variant/trim than selected.
DTC P0650

Step Action Yes No
Schematic Reference:  Instrument Cluster Schematics  in Instrument Panel, Gages, and Console and  Engine Controls Schematics 
Connector End View Reference:  Powertrain Control Module (PCM) Connector End Views  or  Engine Controls Connector End Views 
1 Did you perform the Diagnostic System Check-Engine Controls? Go to Step 2  Go to Diagnostic System Check - Engine Controls
2
  1. Turn ON the ignition, with the engine OFF.
  2. Observe the malfunction indicator lamp (MIL) on the instrument panel cluster (IPC).
Is the MIL illuminated?
Go to Step 3  Go to Step 5 
3 Command the MIL OFF with a scan tool.
Is the MIL illuminated?
Go to Step 4  Go to Intermittent Conditions
4 Test the MIL control circuit for a short to ground or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 16  Go to Step 13 
5
  1. Turn OFF the ignition.
  2. Disconnect the powertrain control module (PCM) connector. Refer to Powertrain Control Module (PCM) Replacement .
  3. Connect a 3-amp fused jumper wire between the MIL control circuit and ground.
  4. Turn ON the ignition, with the engine OFF.
Is the MIL illuminated?
Go to Step 7  Go to Step 6 
6 Does the fuse in the jumper wire open? Go to Step 7  Go to Step 8 
7 Test the MIL control circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 16  Go to Step 13 
8
  1. Turn OFF the ignition.
  2. Connect the PCM connector.
  3. Disconnect the IPC connector. Refer to Instrument Panel Cluster (IPC) Replacement in Instrument Panel, Gages, and Console.
  4. Turn ON the ignition, with the engine OFF.
  5. Probe the ignition 1 voltage circuit of the IPC harness connector with a test lamp that is connected to a good ground. Refer to Probing Electrical Connectors in Wiring Systems.
Does the test lamp illuminate?
Go to Step 10  Go to Step 9 
9 Repair the open in the IPC ignition 1 voltage circuit. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 16  -
10
  1. Connect a test lamp between the ignition 1 voltage circuit and the MIL control circuit of the IPC harness connector.
  2. Command the MIL ON and OFF with a scan tool.
Does the test lamp turn ON and OFF when commanded with a scan tool?
Go to Step 11  Go to Step 12 
11 Inspect for poor connections at the IPC harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 16  Go to Step 15 
12 Test for an open MIL control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 16  Go to Step 13 
13 Inspect for poor connections at the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 16  Go to Step 14 
14 Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement .
Did you complete the replacement?
Go to Step 16  -
15 Replace the IPC. Refer to Instrument Panel Cluster (IPC) Replacement in Instrument Panel, Gages, and Console.
Did you complete the replacement?
Go to Step 16  -
16
  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 Running 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 17 
17 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?
Go to Diagnostic Trouble Code (DTC) List System OK