Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 1317

6E1–344

RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DIAGNOSTIC TROUBLE CODE (DTC) P1336 CRANKSHAFT POSITION 

SENSOR (CKP) SYSTEM VARIATION NOT LEARNED

014RX002

Circuit Description

In order to detect engine misfire at higher engine speeds,
the Powertrain Control Module (PCM) must know of any
variation between the crankshaft sensor pulse. Most
variations are due to the machining of the crankshaft
reluctor wheel, however, other sources of variation are
also possible. A Crankshaft Position Sensor Tooth Error
Correction (TEC) procedure must be performed any time
a change is made to the crankshaft sensor, crankshaft, or
if the PCM measures the variations and then calculates
compensation factors needed to enable the PCM to
accurately detect engine misfire at all speeds and loads.
The Tech 2 must be used to command the PCM to learn
these variations. If for any reason the PCM is unable to
learn these variations or they are out of an acceptable
range, the PCM will set a DTC P1336.  A PCM that has not
had the Crankshaft Position Sensor Tooth Error
Correction (TEC) Procedure performed due to
replacement or reprogramming will also set a DTC
P1336. DTC P1336 is a type A code.

Conditions for Setting the DTC

D

No ECT, Knock, CKP, or injector sensor DTCs.

D

PCM has not successfully learned crankshaft position
Tooth Error Correction(TEC) within 5 attempts or 5 Km
(3 miles).

Action Taken When the DTC Sets

D

The Malfunction Indicator Lamp (MIL) will illuminate
the first time the error is detected.

D

The PCM will record operating conditions at the time
the diagnostic fails. This information will be stored in
the Freeze Frame and Failure Records buffers.

D

A history DTC is stored.

Conditions for Clearing the MIL/DTC

D

The MIL will turn OFF after three consecutive ignition
cycles in which the diagnostic runs without a fault.

D

A history DTC will clear after 40 consecutive warm up
cycles without a fault.

D

DTC(s) can be cleared by using the Tech 2.

Diagnostic Aids

D

Refer to ”TEC Learn Procedure” 

CAUTION: When performing the Crankshaft
Position Sensor Tooth Error Correction (TEC)
Procedure always set the vehicle parking brake and
block the drive wheels.  Release the throttle
immediately when the engine starts to decelerate.
Once the learn procedure is completed, engine
control will be returned to the operator and the
engine will respond to throttle position.

DTC P1336 will only set if the PCM has not learned the
crankshaft position sensor Tooth Error Correction (TEC).
The PCM only needs to learn this variation once per life

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RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

cycle of the vehicle unless the crank sensor to crankshaft
relationship is disturbed.  Removing a part for inspection
and then reinstalling the same part is considered a
disturbance. A fully warmed up engine is critical to
learning the variation correctly. If a valid learn occurs, no
other learns can be completed that ignition cycle. If the
engine cuts out before the specified learn procedure
engine speed or at normal fuel cut–off RPM.  The PCM is
not in the learn procedure mode. Review the Crankshaft
Position Sensor Tooth Error Correction (TEC) Procedure
and re–enable the learn procedure. Verify that the Tech 2
says ”Test in Progress.”

Excessive Crankshaft Variation Symptom

Tech 2 Display

Possible Causes

Factors out of range

Reluctor wheel–matching
quality, run out, incorrect
air gap

Opposing factors out of
range

Disturbance–noise on
crank sensor circuit,
reattempt the Learn
procedure

Sum out of range

Engine too cold,
reattempt the Learn
Procedure

Crank pulse count error

Crank or Cam sensor
DTCs set–Repair first

Test Description

Number(s) below refer to the step number(s) on the
Diagnostic Chart:
1. The Powertrain OBD System Check prompts the

technician to complete some basic checks and store
the freeze frame and failure records data on the
Tech 2 if applicable. This created an electronic copy
of the data taken when the fault occurred. The
information is then stored on the Tech 2 for later
reference.

2. Engine temperature if critical to properly learn the

Crankshaft Position Sensor Tooth Error Correction
(TEC).  Failure to properly warm the engine before
performing this procedure will result in an inaccurate
measurement of the Crankshaft Position Sensor
Tooth Error Correction (TEC). The PCM learns this
variation as the engine is decelerating and then
allows engine control to be returned to the operator.
All accessories must be turned OFF when learning
the Crankshaft Position System angle variation. If
the A/C is not disabled when the learn procedure is
enable, the PCM will disable the A/C.  When the
PCM is ready to allow the learn procedure to run,
the Tech 2 will display ”Test in Progress.”

3. If after the specified number attempts the PCM

cannot learn the crankshaft position Sensor Tooth
Error Correction (TEC) then the variation is too
large and no variation problem is corrected.

4. Being unable to learn the Crankshaft Position

Sensor Tooth Error Correction (TEC) indicates that
the variation is out of range.  Using the Excessive
Crankshaft Variation Trouble shooting will help to
diagnose the area where the problem lies.

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RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DTC P1336 CKP System Variation Not Learned

 

Step

Action

Value(s)

Yes

No

1

Was the ”On–Board Diagnostic (OBD) System Check”
performed?

—

Go to Step 2

Go to

Powertrain

OBD System

Check 

2

Perform the Crankshaft Position Sensor Tooth Error
Correction(TEC) Learning Procedure as follows:
When performing the Crankshaft Position Sensor
Tooth Error Correction (TEC) Learning Procedure
always set the vehicle parking brake and block the
drive wheels. Release the throttle immediately when
the engine starts to decelerate. Once the learn
procedure is completed, engine control will be returned
to the operator and the engine will respond to throttle
position.

1. Install a Tech 2.
2. Put vehicle in Park or Neutral.
3. Run the engine until it is above the specified

temperature.

4. Set the vehicle parking brake and block the drive

wheels.

5. Turn all accessories OFF.
6. Enable the Crankshaft Position Sensor Tooth Error

Correction (TEC) Learning Procedure with the Tech
2.

7. Raise the engine RPM to the specified value

RELEASING the throttle as soon as the engine
shuts out.

Does the Tech 2 indicate that Crankshaft Position
System variation has been learned?

70

°

C (158

°

F)

3920 RPM

Go to Step 5 

Go to Step 3 

3

Attempt Crankshaft Position System Variation
Learning Procedures many times as the specified
value.

Does the Tech 2 indicate that Crankshaft Position
System variation has been learned?

5

Go to Step 5 

Go to Step 4 

4

Repair Check for a problem with the a Crank Sensor to
Crankshaft relationship and repair as necessary?
Refer to the Excessive Crankshaft Variation Symptom
Table.

—

Go to Step 5 

—

5

1. Using the Tech 2, clear DTCs.
2. Start the engine and idle at normal operating

temperature.

3. Operate vehicle within the conditions for setting this

DTC as specified in the supporting text.

Does the Tech 2 indicate that this diagnostic ”Ran and
Passed?”

—

Go to Step 6 

Go to Step 2 

6

Check if any additional DTCs are set.

Are any DTCs displayed that have not been
diagnosed?

—

Go to

applicable
DTC table

System OK

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RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DIAGNOSTIC TROUBLE CODE (DTC) 

P1380 ABS ROUGH ROAD SYSTEM FAULT

014RX002

Circuit Description

The PCM identifies an engine misfire by detecting the
variations in crankshaft speed. The crankshaft speed
variations can also occur when a vehicle is operated over
a rough surface.  The ABS (Anti–Lock Brake System) can
detect when the vehicle is on a rough surface based on
the wheel acceleration/deceleration data supplied by
each wheel speed sensor. The EBCM (Electronic Brake
Control Module) over the Class 2 serial data line sends
this information to the PCM. The PCM then uses this
information in order to determine if the crankshaft
variations are being caused by an actual engine misfire or
from being driven on a rough surface.
This Diagnostic determines if the ABS system is not
capable of detecting a rough road situation.  DTC P1380
is a type D code.

Conditions for Setting the DTC

D

20 unusable ABS data values within a 50 value sample.

Conditions for Clearing the DTC

D

A history DTC clears after 40 consecutive warm–up
cycles without a fault.

D

The Tech 2 can clear the DTC.

Diagnostic Aids

The setting of this DTC indicates that a misfire was
detected and that the PCM could not determine if the

detected misfire was true or due to operating the vehicle
on a rough surface. A misfire can be a true misfire with or
without setting this DTC.  Check the EBCM for poor
connections at the Class 2 serial data terminals. Be sure
no true misfire exists after repairing the cause of this DTC.

Test Description

Number(s) below refer to the step number(s) on the
Diagnostic Chart:
1. The Powertrain OBD System Check prompts the

technician to complete some basic checks and store
the freeze frame and failure records data on the
Tech 2 is applicable. This creates an electronic copy
of the data taken when the malfunction occurred.
The information is then stored on the Tech 2 for
later reference.

2. ABS DTCs are found by selecting Chassis on the

Tech 2.

3. Be careful to clear only DTCs and not the captured

information stored on the Tech 2. The Tech 2 will
issue a warning if this is about to happen.

4. A DTC P1380 being reset indicated that the PCM is

not receiving the correct information from the EBCM
due to an ABS DTC.

5. When DTC P1380 is set, and ABS DTC should also

be set.

6. Refer to Section 5A of the service manual for ABS

DTCs and repairs.