DTC P0335 or P0336 (LUJ)
Diagnostic Instructions
DTC Descriptors
DTC P0335 00: Crankshaft Position Sensor
Circuit |
DTC P0336 00: Crankshaft Position Sensor
Performance |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Crankshaft Position Sensor 5 V Reference
|
P0335 00, P0651 00
|
P0335 00
|
P0335 00, P0651 00
|
P0336 00
|
Crankshaft Position Sensor Signal
|
P0335 00
|
P0335 00
|
P0335 00
|
P0336 00
|
Low Reference
|
-
|
P0335 00
|
-
|
P0336 00
|
|
|
Circuit/System Description
The crankshaft position sensor signal detects crankshaft speed
and position. The crankshaft position sensor produces an
alternating current (AC) voltage of different amplitude and
frequency. The frequency depends on the velocity of the crankshaft,
and the AC voltage output depends on the crankshaft position and
battery voltage. The crankshaft position sensor works in
conjunction with a 58 teeth reluctor wheel attached to the
crankshaft. The engine control module (ECM) can synchronize the
ignition timing, fuel injector timing, and spark knock control
based on the crankshaft position sensor and the camshaft position
sensor inputs. The crankshaft position sensor is also used to
detect misfire and tachometer display.
Conditions for Running the DTC
• |
DTCs P0101 00, P0102 00, P0103
00, P0365 00, P0366 00, P0641 00, and P0651 00 are not set.
|
• |
The engine is cranking or
running. |
• |
The airflow into the engine is
greater than 3 g/s. |
• |
The DTCs run continuously once
the above conditions are met. |
Conditions for Setting the DTC
P0335 00
This sets if one of the following conditions occur:
• |
The ECM detects that the
engine has been cranking for greater than 15 s without a crankshaft
position sensor pulse. |
• |
The engine is operating and
the ECM does not detect a crankshaft position sensor pulse for 10
s. |
P0336 00
This sets if one of the following conditions occur:
• |
The ECM detects that the
engine has been cranking for greater than 1.5 s without detecting
the synchronization gap on the reluctor wheel. |
• |
The ECM detects that the
engine is running, but greater than 25 crankshaft resynchronization
have occurred within 20 s. |
• |
The ECM detects that the
engine is running without detecting the synchronization gap on the
reluctor wheel. |
• |
The ECM detects that the
engine is running, but receives less than 51 or greater than 65
crankshaft position sensor pulses, during one engine
revolution. |
Action Taken When the DTC Sets
• |
DTCs P0335 00 and P0336 00 are
Type B DTCs. |
• |
The ECM will use the camshaft
position sensor for engine operation. |
Conditions for Clearing the DTC
DTCs P0335 00 and P0336 00 are Type B DTCs.
Diagnostic Aids
The following conditions may also set the DTCs:
• |
Physical damage to the
crankshaft position sensor or the reluctor wheel |
• |
Excessive play or looseness of
the crankshaft position sensor or the reluctor wheel |
• |
Improper installation of the
crankshaft position sensor or the reluctor wheel |
• |
Foreign material passing
between the crankshaft position sensor and the reluctor
wheel |
• |
Excessive air gap between the
crankshaft position sensor and the reluctor wheel |
⇒ |
If there is a condition with the crankshaft
position sensor, the tachometer will be inoperative. |
• |
The crankshaft position sensor
may be out of range after a hot soak. Review the freeze
frame/failure records for engine coolant temperature when the DTC
set. |
• |
The ECM uses the camshaft
position sensors to determine engine speed and position when there
is a crankshaft position sensor condition. |
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Electronic Ignition System Description
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Note: If you were sent here
from engine cranks but does not run proceed to circuit/system
testing.
1. |
Ignition ON, observe the DTC
information with a scan tool. Verify DTC P0651 00 is not
set. |
2. |
Attempt to start the engine,
observe the DTC information with a scan tool. DTC P0335 00 and
P0336 00 should not set. |
3. |
Engine cranking, observe the
scan tool Engine Speed parameter. The scan tool should indicate an
engine speed greater than 0 RPM. |
4. |
Move related
harnesses/connectors of the B26 Crankshaft Position Sensor and
verify the engine does not stumble, stall, or change engine
speed. |
⇒ |
If the above condition exists, repair the
harness/connectors as necessary. |
5. |
Operate the vehicle within the
conditions for running the DTC to verify the DTC does not reset.
You may also operate the vehicle within the conditions that you
observed from the freeze frame/failure records data. |
Circuit/System Testing
Note: If the B26 Crankshaft
Position Sensor lead is damaged in any way, replace the B26
Crankshaft Position Sensor.
1. |
Ignition OFF, disconnect the
harness connector at the B26 Crankshaft Position Sensor.
|
2. |
Test for less than 5 Ω
between the low reference circuit terminal 2 and ground.
|
⇒ |
If greater than the specified range, test the
circuit for an open/high resistance. If the circuit tests normal,
replace the K20 Engine Control Module. |
3. |
Ignition ON, test for 4.8-5.2
V between the 5 V reference circuit terminal 1 and ground.
|
⇒ |
If less than the specified range, test the 5 V
reference circuit for a short to ground or an open/high resistance.
If the circuit tests normal, replace the K20 Engine Control
Module. |
⇒ |
If greater than the specified range, test the 5 V
reference circuit for a short to voltage. If the circuit tests
normal, replace the K20 Engine Control Module. |
4. |
Test for 4.8-5.2 V between the
signal circuit terminal 3 and ground. |
⇒ |
If less than the specified range, test the signal
circuit for a short to ground or an open/high resistance. If the
circuit tests normal, replace the K20 Engine Control Module. |
⇒ |
If greater than the specified range, test the
signal circuit for a short to voltage. If the circuit tests normal,
replace the K20 Engine Control Module. |
5. |
Ignition OFF, connect a 3 A
fused jumper wire to the B26 Crankshaft Position Sensor signal
circuit terminal 3. |
6. |
Ignition ON, momentarily touch
the end of the fused jumper wire to ground while monitoring the
scan tool Crankshaft Position Sensor. The Crankshaft Position
Sensor should increment. |
⇒ |
If the Crankshaft Position Sensor does not
increment, replace the K20 Engine Control Module. |
7. |
If all circuits test normal,
replace the B26 Crankshaft Position Sensor. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|