1998 OPEL FRONTERA Workshop Manual

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Page 1945 of 6000

OPEL FRONTERA 1998 Workshop Manual 6E–52
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Exhaust Gas Recirculation (EGR) System Check
060RW135
Circuit Description
Introducing exhaust gas into the combustion chamber
lowers combusti

Page 1946 of 6000

OPEL FRONTERA 1998 Workshop Manual 6E–53 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
System Check
StepActionVa l u e ( s )Ye sNo
1Move the valve up and down to check the slide
resistance.
Is the slide resistance large?
—Go

Page 1947 of 6000

OPEL FRONTERA 1998 Workshop Manual 6E–54
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
ECM Diagnostic Trouble Codes
The following table lists the diagnostic trouble codes
supported a Tech 2 and to flash.If any DTCs not

Page 1948 of 6000

OPEL FRONTERA 1998 Workshop Manual 6E–55 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC
using a
Te c h 2Flash DTCDescriptionMIL
P047571EXH #1 VSV Circuit Open/Short—
P147571EXH #2 VSV Circuit Open/Short—
P148574Intake Throttle

Page 1949 of 6000

OPEL FRONTERA 1998 Workshop Manual 6E–56
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0107 (Flash DTC 34)
MAP Sensor Circuit Low Voltage
060RW134
Circuit Description
The manifold absolute pressure (MAP)

6E–56
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0107 (Flash DTC 34)
MAP Sensor Circuit Low Voltage
060RW134
Circuit Description
The manifold absolute pressure (MAP) sensor responds
to changes in intake manifold pressure (vacuum).
The ECM monitors the MAP signals for voltages outside
the normal range of the MAP sensor. If the ECM detects a
MAP signal voltage that is excessively low, DTC P0107
will be set.
Action Taken When the DTC Sets
The ECM will illuminate the malfunction indicator lamp
(MIL) the first time the fault is detected.
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 P0107 can be cleared by using the Tech 2 “Clear
Info” function or by disconnecting the ECM battery
feed.
Diagnostic Aids
Check for the following conditions:
Turn on the ignition switch and stop the engine. At this
time, the boost pressure will be equal to the
atmospheric pressure and the signal voltage will
increase.
Check for intermittent codes.
The MAP sensor shares a ground with the ECT sensor,
and the Transmission Fluid Temperature sensor.
Poor connection at ECM – Inspect harness connectors
for backed-out terminals, 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, observe the
MAP display on the Tech 2 while moving connectors
and wiring harnesses related to the sensor. A change
in the display will indicate the location of the fault.
If DTC P0107 cannot be duplicated, the information
included in the Failure Records data can be useful in
determining vehicle mileage since the DTC was last set.
If it is determined that the DTC occurs intermittently,
performing the DTC P0107 Diagnostic Chart may isolate
the cause of the fault.

Page 1950 of 6000

OPEL FRONTERA 1998 Workshop Manual 6E–57 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0107 – MAP Sensor Circuit Low Voltage
StepActionVa l u e ( s )Ye sNo
1Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go

Page 1951 of 6000

OPEL FRONTERA 1998 Workshop Manual 6E–58
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0108 (Flash DTC 34)
MAP Sensor Circuit High Voltage
060RW134
Circuit Description
The manifold absolute pressure (MAP

Page 1952 of 6000

OPEL FRONTERA 1998 Workshop Manual 6E–59 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Sensor Circuit High Voltage
StepActionVa l u e ( s )Ye sNo
1Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go to Step 2
Go to OB

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