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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System - 4.6L (LH2) - DTC P0135 To P0391) >> DTC P0335 >> Conditions for Clearing the MIL/DTC

Conditions for Clearing the MIL/DTC

WARNING: This page is about a different variant/trim than selected.
DTC P0335

Step Action Values Yes No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls Connector End Views or Engine Control Module Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2 Attempt to start the engine.
Does the engine start and run?
- Go to Step 3  Go to Step 4 
3
  1. Observe the Freeze Frame/Failure Records for this DTC.
  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 4  Go to Intermittent Conditions
4
  1. Turn OFF the ignition.
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.
  3. Disconnect the 12-way connector.
  4. Turn ON the ignition, with the engine OFF.
  5. Measure the voltage from the 12-volt reference circuit of the crankshaft position (CKP) sensor to a good ground on the engine control module (ECM) side of the 12-way connector with a DMM. Refer to Circuit Testing in Wiring Systems.
Is the voltage within the specified value?
B+ Go to Step 5  Go to Step 7 
5 Measure the voltage from the 12-volt reference circuit to the low reference circuit of the CKP sensor on the ECM side of the 12-way connector with a DMM. Refer to Circuit Testing in Wiring Systems.
Is the voltage within the specified value?
B+ Go to Step 6  Go to Step 8 
6
  1. Ensure the battery is fully charged.
  2. Measure the voltage from the CKP sensor signal circuit of the CKP sensor to a good ground on the ECM side of the 12-way connector with a DMM. Refer to Circuit Testing in Wiring Systems.
Is the voltage within the specified range?
8-11 V Go to Step 10  Go to Step 9 
7 Test the 12-volt reference circuit for an open and a short to ground between the ECM and the 12-way connector. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 14 
8 Test the low reference circuit for an open or short to ground between the ECM and the 12-way connector. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 14 
9 Test the CKP sensor signal circuit between the ECM and the 12-way connector for the following conditions:
  • An open
  • A short to voltage
  • A short to ground

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 14 
10 Test the following circuits of the CKP sensor for high resistance between the ECM and the 12-way connector.
  • The 12-volt reference
  • The low reference
  • The CKP sensor signal

Refer to Circuit Testing in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 11 
11
  1. Remove the intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical.
  2. Test the 12-volt reference circuit between the 12-way connector and the CKP sensor for the following conditions:
Did you find and correct the condition?
- Go to Step 22  Go to Step 12 
12 Test the low reference circuit between the 12-way connector and the CKP sensor for the following conditions:
  • An open
  • A short to voltage
  • High resistance

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 13 
13 Test the CKP sensor signal circuit between the 12-way connector and the CKP sensor for the following conditions:
  • An open
  • A short to voltage
  • A short to ground
  • High resistance

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 16 
14 Test for an intermittent and for a poor connection at the ECM side of the 12-way connector. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 15 
15 Test for an intermittent and for a poor connection at the ECM. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 21 
16 Test for an intermittent and for a poor connection at the CKP sensor side of the 12-way connector. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 17 
17 Test for an intermittent and for a poor connection at the CKP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 22  Go to Step 18 
18
  1. Remove the CKP sensor. Refer to Crankshaft Position Sensor Replacement .
  2. Visually inspect the CKP sensor for the following conditions:
    • Physical damage
    • Loose or improper installation
    • Wiring routed too closely to the secondary ignition components
    • Excessive air gap between the CKP sensor and the reluctor wheel
    • The CKP sensor coming in contact with the reluctor wheel
    • Foreign material passing between the CKP sensor and the reluctor wheel
Did you find and correct the condition?
- Go to Step 22  Go to Step 19 
19 Visually inspect the crankshaft reluctor wheel for following conditions:
  • Physical damage
  • Improper installation
  • Excessive end play or looseness

Refer to Crankshaft and Bearing Cleaning and Inspection in Engine Mechanical.
Did you find and correct the condition?
- Go to Step 22  Go to Step 20 
20 Replace the CKP sensor. Refer to Crankshaft Position Sensor Replacement .
Did you complete the replacement?
- Go to Step 22  -
21 Replace the ECM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?
- Go to Step 22  -
22
  1. Install the intake manifold if previously removed. Refer to Intake Manifold Replacement in Engine Mechanical.
  2. Connect the 12-way connector.
  3. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.
  4. Clear the DTCs with a scan tool.
  5. Turn OFF the ignition for 30 seconds.
  6. Start the engine.
  7. 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 23  Go to Step 2 
23 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?
- Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information System OK