Opel Frontera UE. Manual - part 1536

6E–359

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

Damaged harness–Inspect the wiring harness for
damage. If the harness appears to be OK, observe the
moving connectors and wiring harnesses related to the
sensor.
A change in the display will indicate the location of
the fault. If DTC P1340 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 P1340 Diagnostic Chart may
isolate the cause of the fault.

DTC P1340 - ION Sensing Module Cylinder ID Fault

(Cylinder Synchronization Fail)

Step

Action

Value(s)

Yes

Was the “On-Board (OBD) System Check” performed?

—

Go to

Step 2

Go to

OBD

System

Check

1. Ignition “ON”, engine “OFF”.
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 P1340.

Does the Tech 2 indicate DTC P1340 failed this
ignition?

—

Go to

Step 3

Refer to

Diagnostic

Aids

1. Ignition “OFF”.
2. Disconnect the ION Sensing module.
3. Disconnect the PCM.

Is the action complete?

—

Go to

Step 4

Go to

Step 3

Check the ION Sensing module harness between the
PCM and ICSS module circuit at the QC line harness
connector.

Was a problem found?

—

Verify repair

Go to

Step 6

1. Disconnect the ignition coil.

Is the action complete?

—

Go to

Step 6

Go to

Step 5

Check the ION Sensing module harness between the
ignition coil and ION Sensing module circuit at the ION
Sensing Module harness connector.

Was a problem found?

—

Verify repair

Go to

Step 7

Check the following items;

1. Ignition coil and ignition coil circuit.
2. Ignition coil ground circuit for a poor connection.
3. If a problem is found, repair wiring harness as

necessary.

Was a problem found?

—

Verify repair

Go to

Step 8

Replace the Ignition coil.

Is the action complete?

—

Verify repair

Go to

Step 9

SECTION

6E–360

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

DTC P1340 - ION Sensing Module Cylinder ID Fault

(Cylinder Synchronization Fail)

(Cont'd)

Step

Yes

Value(s)

Action

Check the following items;

1. ION Sensing module ground circuit for a poor

connection.

2. If a problem is found, repair wiring harness as

necessary.

Was a problem found?

—

Go to

Step 10

Go to

Step 11

Replace the ION Sensing module.

Is the action complete?

—

Verify repair

Go to

Step 10

Replace the PCM.

IMPORTANT:
The replacement PCM must be programmed.
Refer to

ON-Vehicle Service in Power Control Module

and Sensors for procedures.
And also refer to latest Service Bulletin. Check to see if
the latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.

Is the action complete?

—

Verify repair

—

SECTION

6E–361

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

Diagnostic Trouble Code (DTC) P1404 EGR Stuck Closed

060R100136

Circuit Description

The powertrain control module (PCM) monitors the EGR
valve pintle position input to ensure that the valve
responds properly to commands from the PCM, and to
detect a fault if current pintle zero position is different from
the learned zero position. If the PCM detects a pintle
position signal indicates more than 30 % different
between current zero position and the learned zero
position for more than 5 seconds, and this condition exists
3 times during trip, then the PCM will set DTC P1404.

Conditions for Setting the DTC

Ignition voltage is between 11 and 16 volts.

Intake Air temp is more than 3

Desired EGR position is more than 3 %.

Difference of EGR pintle position between current and
the learned zero is more than 15 %.

Action Taken When the DTC Sets

The PCM will illuminate the malfunction indicator lamp
(MIL) after consecutive 2nd trip in which the fault is
detected.

The PCM will store conditions which were present
when the DTC was set as Freeze Frame and in Failure
Records data.

Conditions for Clearing the MIL/DTC

The PCM will turn the MIL “OFF” on the third
consecutive trip cycle during which the diagnostic has
been run and the fault condition is no longer present.

A history DTC P1404 will clear after 40 consecutive
warm-up cycles have occurred without a fault.

DTC P1404 can be cleared by using the Tech 2 “Clear
Info” function.

Diagnostic Aids

Check for the following conditions:

Excessive carbon deposit on EGR valve shaft and/or
foreign material may cause the EGR valve not to fully
seat. The carbon deposit may occur by unusual port
operation. Remove foreign material and/or excessive
carbon deposit on EGR valve shaft and to allow the
EGR valve to be fully seated.

Poor connection or damaged harness – Inspect the
wiring harness for damage.

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.

SECTION

6E–362

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

DTC P1404 – EGR Stuck Closed

Step

Action

Value(s)

Yes

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

—

Go to

Step 2

Go to

OBD

System

Check

1. Ignition “ON”, engine “OFF”, review and record

Tech 2 Failure Records Data.

2. Operate the vehicle within Failure Records

conditions as noted.

3. Using a Tech 2, monitor “DTC inf.” for DTC P1404

until the DTC P1404 test runs. Note the result.

Does the Tech 2 indicates DTC P1404 failed this
ignition?

—

Go to

Step 3

Refer to

Diagnostic

Aids

1. Disconnect the EGR valve harness connector.
2. Inspect the EGR valve and connectors for damaged

pin or terminals.

Were there any damaged pins or terminals?

—

Go to

Step 4

Go to

Step 5

Repair the damaged pin or terminal.

Is the action complete?

—

Verify repair

—

1. Remove EGR valve from Engine.
2. Inspect EGR valve for any excessive carbon

deposit on EGR shaft.

3. Inspect for any foreign material inside of EGR valve.

Was excessive carbon deposit on EGR valve shaft
and/or foreign material in EGR valve ?

—

Go to

Step 6

Go to

Step 7

1. Clean up EGR valve shaft and inside of EGR valve.
2. Remove foreign material from EGR valve.
3. Visually inspect damage of pintle and seat to see if it

is bent. If damaged, leakage may occur.

Was there any severe damage which affects function?

—

Go to

Step 8

Verify repair

Go to

Step 7

1. Install the EGR valve.
2. Ignition “OFF”.
3. Install the Tech 2.
4. Run the engine at idle.
5. On the Tech 2, select EGR Control Test.
6. Use the “UP” arrow to increase the EGR from 0% to

40%.

Did EGR work properly?

—

Go to

Step 8

1. Reset the learned zero EGR valve position.
2. Repeat step 7.

Did EGR work properly?

—

Verify repair

Go to

Step 9

SECTION

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