check engine OPEL FRONTERA 1998 Workshop Manual

6E–112
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0219 – Engine Over Speed Warning
StepNo Ye s Va l u e ( s ) Action
31. Review and record Failure Records information.
2. Clear DTC P0219.
3. Start the engine and idle for 1 minute.
4. Observe DTCs.
Is DTC P0219 set?
—Go to Step 4—
4Observe the AP value displayed on the Tech 2.
Is the AP value near the specified value?(Idling 720 r.p
.m) 0 %
Go to Step 3Go to Step 5
5Observe the Engine speed displayed on the Tech 2.
Is the Engine speed near the specified value?(Idling) 720 r.
p.m
Go to Step 7Go to Step 6
61. Check the CKP sensor.
2. Ignition “ON.”
3. Using a DVM, verify that 5 V reference and ground
are being supplied at the sensor connector (ECM
side).
Are 4-6 volts and ground available at the sensor?
—Go to Step 9Go to Step 7
71. Ignition “ON.”
2. With a DVM, backprobe the ECM connector 5 V
reference and ground connections.
Are 5 V reference and ground available at the ECM?
—Go to Step 8Go to Step 13
8Check 5 V reference or ground between the CKP
sensor and ECM and repair the open circuit, short to
ground or short to voltage.
Is the action complete?
—Verify repair—
91. Ignition “OFF.”
2. Disconnect the ECM and CKP sensor.
3. Check for an open or a short to ground in the CKP
reference circuit between the CKP sensor
connector and the ECM harness connector.
4. If a problem is found, repair as necessary.
Was a problem found?
—Verify repairGo to Step 10
101. Reconnect the ECM and CKP sensor.
2. Connect a DVM to measure voltage on the CKP
reference circuit at the ECM connector.
3. Observe the voltage while cranking the engine.
Is the voltage near the specified value?
2.5 VGo to Step 13Go to Step 11
11Check the connections at the CKP sensor and replace
the terminals if necessary.
Did any terminals require replacement?
—Verify repairGo to Step 12
12Replace the CKP sensor.
Is the action complete?
—Verify repair—
13Check the connections at the ECM and replace the
terminals if necessary.
Did any terminals require replacement?
—Verify repair Go to Step 14

6E–113 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0219 – Engine Over Speed Warning
StepNo Ye s Va l u e ( s ) Action
14Check the X57 signal plate.
Is the X57 signal plate damage?
—Go to Step 15Go to Step 3
15Replace the X57 signal plate.
Is the action complete?
—Verify repairGo to Step 2

6E–114
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0336 (Flash DTC 43)
CKP (Crank Position) Sensor Out of Synchro
060RW133
Circuit Description
The CKP reference signal is produced by the crankshaft
position (CKP) sensor. During one crankshaft revolution,
crankshaft pulses will be produced. The Engine Control
Module ECM uses the CKP reference signal to calculate
engine RPM and crankshaft position. If the ECM receives
an incorrect number of pulses on the CKP reference
circuit, DTC P0336 will set.
Action Taken When the DTC Sets
The ECM will store conditions which were present
when the DTC was set as Freeze Frame and in the
Failure Records data.
Conditions for Clearing the MIL/DTC
DTC P0336 can be cleared by using the Tech 2 “Clear
Info” function or by disconnecting the ECM battery
feed.
Diagnostic Aids
An intermittent may be caused by a poor connection,
rubbed–through wire insulation or a wire broken inside the
insulation. Check for:
Poor connection – Inspect the ECM harness and
connectors for improper mating, broken locks,
improperly formed or damaged terminals, and poor
terminal-to-wire connection.
Damaged harness – Inspect the wiring harness for
damage. If the harness appears to be OK, disconnect
the ECM, turn the ignition on and observe a voltmeter
connected to the CKP reference circuit at the ECM
harness connector while moving connectors and
wiring harnesses related to the ECM. A change in
voltage will indicate the location of the fault.
Reviewing the Failure Records vehicle mileage since the
diagnostic test last failed may help determine how often
the condition that caused the DTC to be set occurs. This
may assist in diagnosing the condition.

6E–115 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0336 – CKP Sensor Out of Synchro
StepActionVa l u e ( s )Ye sNo
1Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go to Step 2
Go to OBD
System
Check
2Attempt to start the engine.
Does the engine start?
—Go to Step 3
Go to “Engine
Cranks But
Will Not Run”
chart
31. Review and record Failure Records information.
2. Clear DTC P0336.
3. Start the engine and idle for 1 minute.
4. Observe DTCs.
Is DTC P0336 set?
—Go to Step 4
Refer to
Diagnostic
Aids
41. Disconnect the ECM and CKP sensor.
2. Check for an open or a short to ground in the CKP
reference circuit between the CKP sensor
connector and the ECM harness connector.
3. If a problem is found, repair as necessary.
Was a problem found?
—Verify repairGo to Step 5
51. Reconnect the ECM and CKP sensor.
2. Connect a DVM to measure voltage on the CKP
reference circuit at the ECM connector.
3. Observe the voltage while cranking the engine.
Is the voltage near the specified value?
2.5 VGo to Step 8Go to Step 6
6Check the connections at the CKP sensor and replace
the terminals if necessary.
Did any terminals require replacement?
—Verify repairGo to Step 7
7Replace the CKP sensor.
Is the action complete?
—Verify repairGo to Step 8
8Check connections at the ECM and replace the
terminals if necessary.
Did any terminals require replacement?
—Verify repairGo to Step 9
9Replace the ECM (Refer to the Data Programming in
Case of ECM change).
Is the action complete?
—Verify repair—

6E–116
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0337 (Flash DTC 43)
CKP (Crank Position) Sensor No Signal
060RW133
Circuit Description
The CKP reference signal is produced by the crankshaft
position (CKP) sensor. During one crankshaft revolution,
CKP crankshaft reference pulses will be produced. The
Engine Control Module ECM uses the CKP reference
signal to calculate engine RPM and crankshaft position. If
the ECM does not receive pulses on the CKP reference
circuit, DTC P0337 will set.
Action Taken When the DTC Sets
The ECM will store conditions which were present
when the DTC was set as Freeze Frame and in the
Failure Records data.
Conditions for Clearing the MIL/DTC
DTC P0337 can be cleared by using the Tech 2 “Clear
Info” function or by disconnecting the ECM battery
feed.
Diagnostic Aids
An intermittent may be caused by a poor connection,
rubbed-through wire insulation or a wire broken inside the
insulation. Check for:
Poor connection – Inspect the ECM harness and
connectors for improper mating, broken locks,
improperly formed or damaged terminals, and poor
terminal-to-wire connection.
Damaged harness – Inspect the wiring harness for
damage. If the harness appears to be OK, disconnect
the ECM, turn the ignition on and observe a voltmeter
connected to the CKP reference circuit at the ECM
harness connector while moving connectors and
wiring harnesses related to the ICM. A change in
voltage will indicate the location of the fault.
Reviewing the Failure Records vehicle mileage since the
diagnostic test last failed may help determine how often
the condition that caused the DTC to be set occurs. This
may assist in diagnosing the condition.

6E–117 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0337 – CKP Sensor No Signal
StepActionVa l u e ( s )Ye sNo
1Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go to Step 2
Go to OBD
System
Check
2Attempt to start the engine.
Does the engine start?
—Go to Step 3Go to Chart 3
31. Review and record Failure Records information.
2. Clear DTC P0337.
3. Start the engine and idle for 1 minute.
4. Observe DTCs.
Is DTC P0337 set?
—Go to Step 4
Refer to
Diagnostic
Aid
41. Disconnect the CKP sensor.
2. Ignition “ON.”
3. Using a DVM, verify that 5 V reference and ground
are being supplied at the sensor connector (ECM
side).
Are 4-6 volts and ground available at the sensor?
—Go to Step 7Go to Step 5
51. Ignition “ON.”
2. With a DVM, backprobe the ECM connector 5 V
reference and ground connections.
Are 5 V reference and ground available at the ECM?
—Go to Step 6Go to Step 11
6Check 5 V reference or ground between the CKP
sensor and ECM and repair the open circuit, short to
ground or short to voltage.
Is the action complete?
—Verify repair—
71. Ignition “OFF.”
2. Disconnect the ECM and CKP sensor.
3. Check for an open or a short to ground in the CKP
reference circuit between the CKP sensor
connector and the ECM harness connector.
4. If a problem is found, repair as necessary.
Was a problem found?
—Verify repairGo to Step 8
81. Reconnect the ECM and CKP sensor.
2. Connect a DVM to measure voltage on the CKP
reference circuit at the ECM connector.
3. Observe the voltage while cranking the engine.
Is the voltage near the specified value?
2.5 VGo to Step 11Go to Step 9
9Check the connections at the CKP sensor and replace
the terminals if necessary.
Did any terminals require replacement?
—Verify repairGo to Step 10
10Replace the CKP sensor. Use caution and avoid hot oil
that may drip out.
Is the action complete?
—Verify repair—

6E–118
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0337 – CKP Sensor No Signal
StepNo Ye s Va l u e ( s ) Action
11Check the connections at the ECM and replace the
terminals if necessary.
Did any terminals require replacement?
—Verify repair Go to Step 12
12Replace the ECM (Refer to the Data Programming in
Case of ECM change).
Is the action complete?
—Verify repair—

6E–119 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0341 (Flash DTC 41)
CMP (Cam Position) Sensor Out of Synchro
060RW133
Circuit Description
The CMP signal is produced by the camshaft position
(CMP) sensor pulses when the engine is running and
crankshaft position (CKP) sync pulses are also being
received. The Engine Control Module ECM uses the
CMP signal pulses to initiate sequential fuel injection. If
the ECM receives an incorrect number of pulses on the
CMP reference circuit, DTC P0341 will set.
Action Taken When the DTC Sets
The ECM will store conditions which were present
when the DTC was set as Freeze Frame and in the
Failure Records data.
Conditions for Clearing the MIL/DTC
DTC P0341 can be cleared by using the Tech 2 “Clear
Info” function or by disconnecting the ECM battery
feed.
Diagnostic Aids
An intermittent may be caused by a poor connection,
rubbed–through wire insulation or a wire broken inside the
insulation. Check for:
Poor connection — Inspect the ECM harness and
connectors for improper mating, broken locks,improperly formed or damaged terminals, and poor
terminal-to-wire connection.
Damaged harness — Inspect the wiring harness for
damage. If the harness appears to be OK, disconnect
the ECM, turn the ignition on and observe a voltmeter
connected to the CMP signal circuit at the ECM
harness connector while moving connectors and
wiring harnesses related to the ICM and the CMP
sensor. A change in voltage will indicate the location
of the fault.
Reviewing the Failure Records vehicle mileage since the
diagnostic test last failed may help determine how often
the condition that caused the DTC to be set occurs. This
may assist in diagnosing the condition.
Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Chart.
2. Ensures that the fault is present.
12.Determines whether the fault is being caused by a
missing camshaft magnet or a faulty sensor. The
voltage measured in this step should read around 4
volts, toggling to near 0 volts when the CMP sensor
interfaces with the camshaft magnet.

6E–120
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0341 —CMP Sensor Out of Synchro
StepActionVa l u e ( s )Ye sNo
1Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go to Step 2
Go to OBD
System
Check
21. Ignition “ON.”
2. Review and record Tech 2 Failure Records data.
3. Operate the vehicle within Failure Records
conditions as noted.
4. Using a Tech 2, monitor “DTC” info for DTC P0341
until the DTC P0341 test runs.
5. Note the test result.
Does the Tech 2 indicate DTC P0341 failed this
ignition?
—Go to Step 3
Refer to
Diagnostic
Aids
31. Disconnect the CMP sensor.
2. Measure the voltage between the sensor feed
circuit and the sensor ground circuit at the CMP
sensor harness connector.
Does the voltage measure near the specified value?
4-6 VGo to Step 4Go to Step 5
4Measure the voltage between the CMP sensor signal
circuit and the sensor ground circuit at the CMP sensor
harness connector.
Does the voltage measure near the specified value?
4-6 VGo to Step 11Go to Step 8
5If the voltage measured in step 3 was less than 4-6
volts, proceed directly to step 6 without completing this
step.
If the voltage in step 3 was greater than 4-6 V, repair the
short to voltage in the CMP feed circuit.
Is the action complete?
—Verify repair—
61. Check for poor connections at the camshaft
position sensor.
2. If a problem is found, repair it as necessary.
Was a problem found?
—Verify repairGo to Step 7
71. Ignition “OFF,” disconnect the ECM and the CMP
sensor.
2. Check the following circuits for an open between the
ignition control module and the CMP sensor:
The sensor feed circuit.
3. If a problem is found, repair as necessary.
Was a problem found?
—Verify repair Go to Step 9
81. Ignition “OFF,” disconnect the ECM (leave the CMP
sensor disconnected).
2. Ignition “ON,” check the following circuits:
The CMP sensor signal circuit for an open or a
short to voltage.
The CMP sensor input signal circuit for a short
to ground.
3. If a problem is found, repair it as necessary.
Was a problem found?
—Verify repairGo to Step 9
9Check for a short or open in the sensor ground circuit.
Was a problem found?
—Verify repairGo to Step 10

6E–121 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0341 —CMP Sensor Out of Synchro
StepNo Ye s Va l u e ( s ) Action
101. Check for poor connections at the ECM.
2. If a problem is found, repair it as necessary.
Was a problem found?
—Verify repairGo to Step 11
11Backprobe the ECM connector with a DVM to monitor
voltage on the camshaft position input signal circuit
while cranking the engine with the sensor connected.
(Use rubber band, tape, or an assistant to keep the
DVM lead in contact with the sensor terminal during this
test.)
Does the voltage toggle between the specified values?
4-0 VGo to Step 15Go to Step 12
121. Remove the CMP sensor from the engine front
cover (leave the sensor wiring connected).
2. Place a magnet on the CMP sensor.
(If you use a magnet that is too small to cover the face
of the sensor, test on every part of the sensor face
because only a small area will respond to this test.)
Does the DVM display a voltage near the specified
value?
0 VGo to Step 13Go to Step 14
13Replace the faulty or missing camshaft position sensor
magnet.
Is the action complete?
—Verify repair—
14Replace the camshaft position sensor.
Is the action complete?
—Verify repair—
15Replace the ECM (Refer to the Data Programming in
Case of ECM change).
Is the action complete?
—Verify repair—