Opel Frontera UE. Manual - part 963

 

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Opel Frontera UE. Manual - part 963

 

 

6E2–238

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

Diagnostic Trouble Code (DTC) P1380 ABS Rough Road ABS System Fault

Circuit Description

The powertrain control module (PCM) monitors ABS fault
signal. When PCM receives fault signal, PCM will set
DTC P1380.

Conditions for Setting the DTC

D

Vehicle speed is more than 5 mph.

D

Load is less than 99%.

D

Engine revolution is less than 6250 rpm.

D

PCM receives ABS fault signals from ABS unit.

D

Ignition on.

D

Misfire DTCs exist.

D

100 test failures within 120 test samples.

Action Taken When the DTC Sets

D

The PCM will store DTC 1380 only, no MIL turn on.

Conditions for Clearing the MIL/DTC

D

A history DTC P1380 will clear after 40 consecutive
warm-up cycles have occurred without a fault.

D

DTC 1380 can be cleared by using Tech-II or
disconnecting the PCM battery feed.

Diagnostic Aids

Check for the following conditions:

D

PCM and ABS communication line short circuit to other
line may cause faulty signal.  Inspect communication
line.

D

Follow ABS ECU diagnosis procedure, refer to ABS
procedure page.

DTC P1380 – ABS Rough Road ABS System Fault

 

Step

Action

Value(s)

Yes

No

1

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

Go to 

Step 2

Go to 

OBD

System

Check

2

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” info for DTC P1380.

Note the result.

Does the Tech 2 indicates DTC P1380 DTCs failed this
ignition?

Refer to ABS

diagnosis

After inspecting

ABS, repeat

Step 2

If problem still

exists, go to

Step 3

Clear DTC by

Tech 2

3

Check short circuit among communication line of
PCM/ABS and others.

Does short circuit exist?

Repair wiring

Verify repair

Go to 

Step 4

4

Replace the PCM.

Is the action complete?

Verify repair

6E2–239

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

Diagnostic Trouble Code (DTC) 

P1381 ABS Rough Road Class 2 Serial Link Error

Circuit Description

The powertrain control module (PCM) monitors no ABS
signal. When PCM does not receive ABS signal, PCM will
set DTC P1381.

Conditions for Setting the DTC

D

PCM does not receive ABS signals from ABS ECU.

D

Vehicle speed is more than 0 mph.

D

Load is less than 99%.

D

Engine revolution is less than 6250rpm.

D

2.5 second after key on.

D

Misfire DTCs exist.

D

100 test failures within 120 test samples.

Action Taken When the DTC Sets

D

The PCM will store DTC 1381 only, MIL on.

Conditions for Clearing the MIL/DTC

D

A history code DTC P1381 will clear after 40
consecutive warm-up cycles have occurred without a
fault.

D

DTC P1381 can be cleared by Tech-II or by
disconnecting the PCM battery feed.

Diagnostic Aids

Check for the following conditions:

D

Inspect open circuit of communication wire between
ABS ECU and PCM.

D

Follow ABS ECU diagnosis procedure.

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 P1381 – ABS Rough Road Class 2 Serial Link Error

 

Step

Action

Value(s)

Yes

No

1

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

Go to 

Step 2

Go to 

OBD

System

Check

2

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 P1381.

Note the result.

Does the Tech 2 indicates DTC P1381 DTCs failed this
ignition?

Refer to ABS

diagnosis

After inspecting

ABS, repeat

Step 2

If problem still

exists, go to

Step 3

Clear DTC by

Tech 2

3

Check open circuit among communication line of
PCM/ABS and others.

Does short circuit exist?

Repair wiring

Verify repair

Go to 

Step 4

4

Replace the PCM.

Is the action complete?

Verify repair

6E2–240

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

Diagnostic Trouble Code (DTC) P1404 EGR Stuck Closed

D06RW055

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

D

Ignition voltage is between 11 and 16 volts.

D

Intake Air temp is more than 3

°

C.

D

Desired EGR position is 0.

D

Difference of EGR pintle position between current and
the learned zero is more than 30 % for more than 5
seconds, and exists three time to the above condition
during  a trip the PCM will set DTC 1404. Then it trigger
the PCM lights on.

Action Taken When the DTC Sets

D

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

D

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

D

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.

D

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

D

DTC P1404 can be cleared by using the Tech 2 “Clear
Info” function or by disconnecting the PCM battery
feed.

Diagnostic Aids

Check for the following conditions:

D

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

D

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.

6E2–241

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

DTC P1404 – EGR Stuck Closed

 

Step

Action

Value(s)

Yes

No

1

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

Go to 

Step 2

Go to 

OBD

System

Check

2

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

3

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

4

Repair the damaged pin or terminal.

Is the action complete?

Verify repair

5

1. Remove EGR valve from Engine.
2. Inspect EGR valve for is 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

6

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

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

8

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

Did EGR work properly?

Verify repair

Go to 

Step 9

9

Replace the EGR valve.

Does DTC P1404 still fail “DTC” test on the Tech 2?

Go to 

Step 10

Verify repair

10

Replace the PCM.

Is the action complete?

Verify repair

 

 

 

 

 

 

 

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