DTC P0336. Buick Rendezvous

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2005 🢒 Rendezvous - AWD 🢒 DTC 🢒 DTC P0336

Circuit Description

The crankshaft position (CKP) sensor A is a 24X sensor and contains a hall-effect switch. This solid state switching device produces 24 digital ON/OFF pulses per engine revolution. These pulses occur when the interrupter ring, mounted to the crankshaft damper assembly and containing 24 evenly spaced blades and windows, passes between the sensor tip and a magnet. The 24X sensor is connected directly to the powertrain control module (PCM). The PCM provides 12 volts to the sensor on a 12-volt reference circuit, and provides a ground on a low reference circuit. The PCM receives the pulses from the sensor on the medium resolution engine speed signal circuit. The PCM uses the 24X signal for enhanced smoothness and idle stability at lower engine speeds. The PCM monitors the CKP sensor A for errors. If the PCM receives an incorrect number of signals from the CKP sensor A, DTC P0336 sets.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0336 Crankshaft Position (CKP) Sensor A Performance

Conditions for Running the DTC

•	The engine is running for more than 3 seconds.

•	This diagnostic runs continuously once the above condition is met.

Conditions for Setting the DTC

•	The PCM detects the following for every 2 engine revolutions:

-	Six low resolution engine speed signals

-	One camshaft position (CMP) sensor signal

-	A number other than 0 or 48 medium resolution engine speed signals

•	This conditions exists for more than 8 seconds.

Action Taken When the DTC Sets

•	The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.

•

The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC

•	The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.

•	A current DTC, Last Test Failed, clears when the diagnostic runs and passes.

•	A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.

•	Clear the MIL and the DTC with a scan tool.

Step

Action

Values

Yes

Schematic Reference: Engine Controls Schematics

Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

Observe the DTC Info with a scan tool.

Is DTC P0335 also set?

Go to DTC P0335

Go to Step 3

Observe the Freeze Frame/Failure Records for this DTC.
Turn OFF the ignition for 30 seconds.
Start the engine.
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

Turn OFF the ignition.
Inspect all of the crankshaft position (CKP) sensor circuits for the following conditions:

•	Wiring routed too closely to secondary ignition wires or components

•	Wiring routed too closely to after-market add-on electrical equipment

•	Wiring routed too closely to solenoids, relays, and motors

•	Electromagnetic interference (EMI) in the CKP sensor circuits

Did you find and correct the condition?

Go to Step 19

Go to Step 5

Turn ON the ignition, with the engine OFF.
Test for an intermittent and a poor connection at the CKP sensor A. 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 19

Go to Step 6

Disconnect the CKP sensor.
Measure the voltage from the 12-volt reference circuit of the CKP sensor to a good ground with a DMM.

Is the voltage measured within 1 volt of the specified value?

B+

Go to Step 7

Go to Step 16

Turn OFF any electrical loads or accessories.
Measure the amperage between the 12-volt reference circuit and the low reference circuit of the CKP sensor with a DMM.

Is the amperage more than the specified value?

210 mA

Go to Step 8

Go to Step 12

Test the 12-volt reference circuit for an intermittent condition or shorted to other circuits. Refer to Testing for Electrical Intermittents and Inducing Intermittent Fault Conditions in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 9

Test the low reference circuit for an intermittent condition. Refer to Testing for Electrical Intermittents and Inducing Intermittent Fault Conditions in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 10

Test the medium resolution engine speed signal circuit for an intermittent condition. Refer to Testing for Electrical Intermittents and Inducing Intermittent Fault Conditions in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 11

Test for an intermittent and for a poor connection at the powertrain control module (PCM). 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 19

Go to Step 14

Test the 12-volt reference circuit of the CKP sensor for high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 13

Test the low reference circuit of the CKP sensor for high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 16

Remove the CKP sensor A. Refer to Crankshaft Position Sensor Replacement .
Inspect the CKP sensor for the following conditions:

•	Physical damage

•	Improper installation

•	Excessive play or looseness

•	Foreign material passing between the CKP sensor and the reluctor wheel

•	Insufficient fuel

Did you find and correct the condition?

Go to Step 19

Go to Step 15

Inspect the reluctor wheel for the following conditions:

•	Physical damage

•	Improper installation

•	Excessive endplay or looseness

Refer to Crankshaft and Bearing Cleaning and Inspection in Engine Mechanical - 3.4L.

Did you find and correct the condition?

Go to Step 19

Go to Step 17

Test for an intermittent and for a poor connection 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 19

Go to Step 18

Replace the CKP sensor A. Refer to Crankshaft Position Sensor Replacement .

Did you complete the replacement?

Go to Step 19

Replace the PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 19

Clear the DTCs with a scan tool.
Turn OFF the ignition for 30 seconds.
Start the engine.
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 20

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