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Opel Frontera UE. Manual - part 240

6E1–258

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

Step

Yes

Value(s)

Action

Visually/physically inspect the secondary ignition
wires. Check for the following conditions:

Verify that all ignition wire resistances are less
than the specified value.

Value that ignition wires are correctly routed to
eliminate cross–firing.

Verify that ignition wires are not arcing to ground.
Spraying the secondary ignition wires with a light
mist of water may help locate an intermittent
problem.

Was a problem found?

30,000

Verify repair

Go to Step 14

Replace the TP sensor.

—

Verify repair

—

1. Check the ignition coil secondary resistance.
2. Replace the coil if it is not within the specified value.

Was a problem found?

9 k

– 12k

Verify repair

Go to Step 15

1. Remove the spark plugs and check for gas or oil

fouling, cracks, wear, improper gap, burned
electrodes of heavy deposits.

2. If spark plugs are fouled, the cause of fouling must

be determined before replacing the spark plugs.

Was a problem found?

—

Verify repair

Go to Step 16

Check the ECM grounds to verify that they are clean
and tight. Refer to the ECM wiring diagrams in
Electrical Diagnosis.

Was a problem found?

—

Verify repair

Go to Step 17

Visually/physically check vacuum hoses for splits,
kinks, and proper connections and routing as shown on
the Vehicle Emission Control Information label.

Was a problem found?

—

Verify repair

Go to Step 18

1. Review all diagnostic procedures within this table.
2. If all procedures have been completed and no

malfunctions have been found, review/inspect the
following:

Visual/physical inspection

Tech 2 data

Freeze Frame data/Failure Records buffer

All electrical connections within a suspected
circuit and/or system

3. If a problem is found, repair as necessary.

Was a problem found?

—

Verify repair

Contact

Technical

Assistance

6E1–259

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

RESTRICTED EXHAUST SYSTEM CHECK

Step

Action

Value(s)

Yes

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

—

Go to Step 2

Go to OBD

System

Check

1. Remove the HO2S2.

For removal procedures, refer to Heated
Oxygen Sensors in On–Vehicle Service.

2. Install the Exhaust Backpressure Tester in place of

the Bank 1 HO2S.

3. Idle the engine at normal operating temperature.

Does the reading on the gauge exceed the specified
value?

8.62 kPa

(1.25 psi)

Go to Step 5

Go to Step 3

With the exhaust back–pressure tester in place of
HO2S, and the engine at normal operating
temperature:
Increase the engine speed to 2000 RPM while
observing the gauge.

Does the reading exceed the amount of the value
column?

8.62 kPa

(1.25 psi)

Go to Step 5

Go to Step 4

1. Re–install the HO2S2. (Refer to Heated Oxygen

Sensors in On–Vehicle Service for installation
procedure.)

2. Remove the HO2S1.
3. Install the Exhaust Back–Pressure Tester BT8515V

or equivalent in place of the HO2S1.

4. Bring the engine to normal operating temperature

while observing the gauge.

5. Increase the engine speed to 2000 RPM (allow 10

seconds for pressure build) and observe the gauge.

Did the reading exceed the specified value?

8.62 kPa

(1.25 psi)

Go to Step 6

System OK

Repair a restiction in the exhaust system after the
catalytic converter.
Possible faults include:

Collapsed pipe

Internal muffler failure

—

Verify repair

—

Replace the restricted catalytic converter.

—

Verify repair

—

NOTE: Diagnostic Trouble Codes will be set by running
the vehicle to normal operating temperature after a cold
start with the O2 sensor disconnected. After performing
these tests, use the Tech 2 to erase the Diagnostic
Trouble Codes that were set by the lack of O2 sensor
activity.

6E1–260

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DEFAULT MATRIX TABLE

SERVICE PROCEDURE DEFAULT
STRATEGY

A referral strategy has been established to assist the
technician with additional information when the cause of
the failure cannot be determined. If no problem is found
after performing diagnostics, then for further diagnostic
information, refer to the default matrix table.

DEFAULT MATRIX TABLE

Strategy Based Diagnostic Charts

Initial Diagnosis

Default Section(s)

On–Board Diagnostic (OBD) System
Check

Vehicle does not enter diagnostics.

Chassis Electrical

On–Board Diagnostic (OBD) System
Check

Vehicle enters diagnostics and
communicates with the Tech 2. MIL is
ON in diagnostics. Engine does not
start and run.

Ignition System Check

On–Board Diagnostic (OBD) System
Check

Engine starts and runs, no ECM codes
set. Customer complains of vibration.

—

ECM Power and Ground Check

On–Board Diagnostic (OBD) System
Check.

Chassis Electrical

ECM Power and Ground Check

On–Board Diagnostic (OBD) System
Check. ECM power and ground circuits
OK. Data link voltage incorrect.

Chassis Electrical

Symptoms

Initial Diagnosis

Default Section(s)

Intermittents

1. On–board diagnostic (OBD)

system check.

2. Careful visual/physical inspections.

Chassis Electrical

Hard Starts

1. OBD system check.
2. Sensors (ECT, MAP, TP); MAP

output chart.

3. Fuel system electrical test, fuel

system diagnosis.

4. Ignition system.
5. IAC system check.

Engine Mechanical

Ignition System Check
Exhaust System Diagnosis

Surges and/or Chuggles

1. OBD system check.
2. Heated oxygen sensors.
3. Fuel system diagnosis.
4. Ignition system.

Calibration ID ”Broadcast
Code”/Service Bulletins

Ignition System Check
Generator Output
Exhaust System Diagnosis

Lack of Power, Sluggish or Spongy

1. OBD system check.
2. Fuel system diagnosis.
3. Ignition system.
4. EGR operation.
5. EGR system check.

Refer to Exhaust System in
Engine Exhaust

TCC Operation
Calibration ID/Service Bulletins

Detonation / Spark Knock

1. OBD system check.
2. EGR operation.
3. EGR system check.
4. Fuel system diagnosis.
5. Ignition system.

Cooling System

Ignition System Check
Calibration ID/Service Bulletins

6E1–261

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

Symptoms

Initial Diagnosis

Default Section(s)

Hesitation, Sag, Stumble

1. OBD system check.
2. TP.
3. MAP output check.
4. Fuel system diagnosis.
5. Fuel injector and fuel injector

balance test.

6. EVAP emission canister purge

valve.

7. Ignition system.

EGR Operation

EGR System Check
Generator Output Voltage (refer
to Chassis Electrical)
Calibration ID/Service Bulletins
Ignition System Check

Cuts Out, Misses

1. OBD system check.
2. Cylinder balance test.

Ignition System Check

Rough, Unstable, or Incorrect Idle,
Stalling

1. OBD system check.
2. Fuel injector and fuel injector

balance test.

3. EVAP emission canister purge

valve check.

4. Ignition system.
5. IAC operation.
6. EGR operation.

MAP Output Check

Throttle Linkage
IAC System Check
EGR System Check
A/C Clutch Control Circuit Diag-
nosis
Crankcase Ventilation System
Calibration ID/Service Bulletins
Generator Output Voltage (refer
to Chassis Electrical)
Exhaust Diagnosis

Poor Fuel Economy

1. OBD system check.
2. Careful visual/physical inspection.
3. Ignition system.
4. Cooling system.

TCC Operation

Exhaust System (refer to Engine
Exhaust)

Engine Cranks But Will Not Run

1. OBD system check.

Fuel System Electrical
Diagnosis

Fuel System Diagnosis
Fuel Injector
Fuel Injector Balance Test

Excessive Exhaust Emissions or
Odors

1. OBD system check.
2. Emission test.
3. Cooling system.
4. Fuel system diagnosis.
5. Fuel injector and fuel injector

balance test.

6. EVAP emission canister purge

valve.

7. Crankcase ventilation system.
8. Ignition system.
9. MAP output check.

EGR System Check

Exhaust Diagnosis
Calibration ID/Service Bulletins

Dieseling, Run–On

1. OBD system check.
2. Careful visual/physical inspection.
3. Fuel system diagnosis.

—

Backfire

1. OBD system check.
2. Ignition system.
3. Fuel system diagnosis.
4. Fuel injector and fuel injector

balance test.

5. EGR operation, EGR system

check.

Exhaust System Diagnosis,
Intake Casting Flash, Ignition
System Check

Content .. 238 239 240 241 ..