immobilizer OPEL FRONTERA 1998 Workshop Manual

6E–194
ENGINE DRIVEABILITY AND EMISSIONS
Damaged harness – Inspect the wiring harness for
damage. If the harness appears to be OK, disconnect
the PCM, turn the ignition on and observe a voltmeter
connected to the 58X reference circuit at the PCM
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.
DTC P0336 – 58X Reference Signal Circuit
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 PCM and CKP sensor.
2. Check for an open or a short to ground in the 58X
reference circuit between the CKP sensor
connector and the PCM harness connector.
3. If a problem is found, repair as necessary.
Was a problem found?
—Verify repairGo to Step 5
51. Reconnect the PCM and CKP sensor.
2. Connect a DVM to measure voltage on the 58X
reference circuit at the PCM 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. Use caution to avoid any hot
oil that may drip out.
Is the action complete?
—Verify repair—
8Check connections at the PCM and replace the
terminals if necessary.
Did any terminals require replacement?
—Verify repairGo to Step 9
9Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?—Verify repair—

6E–197 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0337 – CKP Sensor Circuit Low Frequency
StepNo Ye s Va l u e ( s ) Action
11Check the connections at the PCM and replace the
terminals if necessary.
Did any terminals require replacement?
—Verify repair Go to Step 12
12Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?—Verify repair—

6E–201 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0341 – CMP Sensor Circuit Performance
StepNo Ye s Va l u e ( s ) Action
101. Check for poor connections at the PCM.
2. If a problem is found, repair it as necessary.
Was a problem found?
—Verify repairGo to Step 11
11Backprobe the PCM 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 PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?—Verify repair—

6E–205 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0342 – CMP Sensor Circuit Low
StepNo Ye s Va l u e ( s ) Action
141. Reinstall the CMP sensor to the engine front cover.
2. Observe the DVM connected to monitor voltage on
the camshaft position signal circuit while cranking
the engine.
Does the voltage toggle between the specified values?
4-0 VGo to Step 15Go to Step 16
15Replace the PCM.
NOTE: The replacement PCM must be programmed.
Refer to
UBS 98model year Immobilizer Workshop
Manual.
Is the action complete?—Verify repair—
16Replace faulty or missing camshaft magnet.
Is the action complete?
—Verify repair—

6E–208
ENGINE DRIVEABILITY AND EMISSIONS
DTC P0351 – Ignition 1 Control Circuit
StepNo Ye s Va l u e ( s ) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
—Go to Step 12Go to Step 13
12Repair the open ignition control circuit.
Is the action complete?
—Verify repair—
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?—Verify repair—

6E–211 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0352 – Ignition 2 Control Circuit
StepNo Ye s Va l u e ( s ) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
—Go to Step 12Go to Step 13
12Repair the open ignition control circuit.
Is the action complete?
—Verify repair—
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?—Verify repair—

6E–214
ENGINE DRIVEABILITY AND EMISSIONS
DTC P0353 – Ignition 3 Control Circuit
StepNo Ye s Va l u e ( s ) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
—Go to Step 12Go to Step 13
12Repair the open ignition control circuit.
Is the action complete?
—Verify repair—
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?—Verify repair—

6E–217 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0354 – Ignition 4 Control Circuit
StepNo Ye s Va l u e ( s ) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
—Go to Step 12Go to Step 13
12Repair the open in ignition control circuit.
Is the action complete?
—Verify repair—
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?—Verify repair—

6E–220
ENGINE DRIVEABILITY AND EMISSIONS
DTC P0355 – Ignition 5 Control Circuit
StepNo Ye s Va l u e ( s ) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
—Go to Step 12Go to Step 13
12Repair the open ignition control circuit.
Is the action complete?
—Verify repair—
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?—Verify repair—

6E–223 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0356 – Ignition 6 Control Circuit
StepNo Ye s Va l u e ( s ) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
—Go to Step 12Go to Step 13
12Repair the open ignition control circuit.
Is the action complete?
—Verify repair—
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?—Verify repair—