Opel Frontera UE. Manual - part 1466

6E–79

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

Malfunction Indicator Lamp (MIL) “ON” Steady

 

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 “OFF”, disconnect PCM.
2. Ignition “ON”, observe the MIL (Service Engine

Soon lamp).

Is the MIL “ON”?

—

Go to 

Step 3

Go to 

Step 5

3

1. Ignition “OFF”, disconnect the instrument panel

cluster.

2. Check the MIL driver circuit between the PCM and

the instrument panel cluster for a short to ground.

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

Was the MIL driver circuit shorted to ground?

—

Go to 

OBD

System

Check

Go to 

Step 4

4

Replace the instrument panel cluster.

Is the action complete?

—

Go to 

OBD

System

Check

—

5

1. Ignition “OFF”, reconnect the PCM.
2. Ignition “ON”, reprogram the EEPROM. Refer to

On-Vehicle Service in Powertrain Control Module
and Sensors for procedures.

3. Using the Tech 2 output controls function, select

MIL dash lamp control and command the MIL
“OFF”. (Refer to the Miscellaneous test)

Did the MIL turn “OFF”?

—

Go to 

OBD

System

Check

Go to 

Step 6

6

Replace the PCM.

IMPORTANT: The replacement PCM must be
programmed. Refer to 

On-Vehicle Service in

Powertrain 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?

—

Go to 

OBD

System

Check

—

SECTION

6E–80

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

No Reduced Power Lamp (RPL)

060R100065

Circuit Description

The Reduced Power lamp (RPL) should be illuminated
during 3 seconds with the ignition “ON” and the engine
stopped. Ignition feed voltage is supplied to the RPL bulb
through the meter fuse. The powertrain control module
(PCM) orderes the RPL “ON” signal for Multiplex Control
Unit. When Multiplex Control Unit is received RPL “ON”
signal that turn RPL “ON” by grounding the RPL driver
circuit.

Diagnostic Aids

An intermittent RPL may be caused by a poor connection,
rubbed-through wire insulation, or a wire broken inside
the insulation. Check for the following items:

D

Inspect the PCM and Multiplex Control Unit harness
and connections for improper mating, broken locks,
improperly formed or damaged terminals, poor
terminal to wire connection, and damaged harness.

D

If the engine runs OK, check for a faulty light bulb, an
open in the MIL driver circuit, or an open in the
instrument cluster ignition feed.

D

If the engine cranks but will not run, check for an open
PCM ignition or battery feed, or a poor PCM to engine
ground.

Test Description

Number(s) below refer to the step number(s) on the
Diagnostic Chart.

2. A “No RPL” condition accompanied by a no–start

condition suggests a faulty PCM ignition feed or
battery feed circuit.

9. Using a test light connected to B+, probe each of the

Multiplex Control Unit ground terminals to ensure
that a good ground is present. Refer to Multiplex
Control Unit Terminal End View for terminal
locations of the Unit Terminal End View for terminal
locations of the Multiplex Control Unit ground
circuits.

12.Using a test light connected to B+, probe each of

the PCM ground terminals to ensure that a good
ground is present. Refer to PCM Terminal End View
for terminal locations of the PCM ground circuits.

21.In this step, temporarily substitute a known good

relay for the PCM relay. The horn relay is nearby,
and it can be verified as “good” simply by honking
the horn. Replace the horn relay after completing
this step.

24.This vehicle is equipped with a PCM which utilizes

an electrically erasable programmable read only
memory (EEPROM). When the PCM is replaced,
the new PCM must be programmed. Refer to PCM
Replacement and Programming Procedures in
Powertrain Control Module (PCM) and Sensors.

SECTION

6E–81

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

No Reduced Power Lamp (RPL)

 

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

Attempt to start the engine.

Does the engine start?

—

Go to 

Step 3

Go to 

Step 11

3

Check the following fuses:
MAIN(100A), B+1(60A), B+2(50A), METER(15A),
ECM(15A) , ENGINE(15A)

Was a problem found?

—

Go to 

Step 14

Go to 

Step 4

4

1. Ignition ”OFF”.
2. Disconnect the cluster meter connector.
3. Ignition “ON”, Probe the ignition feed circuit at the

cluster connector with a test light to ground.

Is the test light “ON”?

—

Go to 

Step 5

Go to 

Step 15

5

1. Ignition “OFF”.
2. Disconnect the Multiplex Control Unit.
3. Check the circuit (Lamp driver Circuit) between

PCM and Multiplex Control Unit.

Was a problem found?

—

Go to 

Step 16

Go to 

Step 6

6

1. Reconnect the cluster meter connector.
2. Disconnect the Multiplex Control Unit.
3. Jumper the RPL driver circuit at the Multiplex

Control Unit connector to ground.

4. Ignition “ON”.

Is the RPL “ON”?

—

Go to 

Step 7

Go to

Instrument

Panel in

Electrical

Diagnosis

7

1. Ignition “OFF”.
2. Probe the ignition feed circuit at the Multiplex

Control Unit connector with a test light to ground.

3. Ignition “ON”.

Is the test light “ON”?

—

Go to 

Step 8

Go to 

Step 17

8

1. Ignition “OFF”.
2. Disconnect the PCM.
3. Check the circuit (Lamp driver Circuit) between

PCM and Multiplex Control Unit.

Was a problem found?

—

Go to 

Step 18

Go to 

Step 9

9

Check the Multiplex Control Unit ground connection
and circuit.

Was a problem found?

—

Go to 

Step 19

Go to 

Step 10

10

Check for damaged terminals at the Multiplex Control
Unit.

Was a problem found?

—

Go to 

Step 20

Go to 

Step 11

11

1. Ignition “ON”.
2. Probe the ignition feed circuit at the PCM harness

connector with a test light to ground.

Is the test light “ON”?

—

Go to 

Step 12

Go to 

Step 21

SECTION

6E–82

6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS

No Reduced Power Lamp (RPL)

  (Cont'd)

Step

No

Yes

Value(s)

Action

12

1. Ignition “OFF”.
2. Check for a faulty PCM ground connection and

Circuit.

Was a problem found?

—

Go to 

Step 23

Go to 

Step 13

13

Check for damaged terminals at the PCM.

Was a problem found?

—

Go to 

Step 24

Go to 

Step 25

14

Replace the fuse.

Is the action complete?

—

Verify repair

—

15

Locate and repair the cluster meter battery feed open
circuit.

Is the action complete?

—

Verify repair

—

16

Locate and repair the circuit between cluster meter and
Multiplex Control Unit open circuit.

Is the action complete?

—

Verify repair

—

17

Locate and repair the circuit Multiplex Control Unit
battery feed open circuit.

Is the action complete?

—

Verify repair

—

18

Locate and repair the between Multiplex Control Unit
and PCM open circuit.

Is the action complete?

—

Verify repair

—

19

Locate and repair the ground connection for Multiplex
Control Unit circuit.

Is the action complete?

—

Verify repair

—

20

Replace the Multiplex Control Unit. circuit.

Is the action complete?

—

Verify repair

—

21

Substitute a known “good” relay for the PCM main
relay.

Was the malfunction fixed?

—

Verify repair

Go to 

Step 22

22

Repair the open in the ignition feed circuit.

Is the action complete?

—

Verify repair

—

23

Locate and repair the ground connection for PCM
circuit.

Is the action complete?

—

Verify repair

—

24

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