Opel Frontera UE. Manual - part 1288

INTELLIGENT SUSPENSION

3F–15

No.

Connector face

H-6

H-13

H-14

H-15

H-16

H-17

H-40

H-42

I-2

No.

Connector face

I-9

I-10

I-18

I-55

SECTION

3F–16

INTELLIGENT SUSPENSION

Diagnostic Trouble Code (DTC)
Identification

DTC No.

DTC NAME

CODE

MEMORY

WARNING

LAMP

2

Actuator Coil Over Current

Yes

OFF

3

Actuator Coil/Position Sensor Open Circuit or Short

Yes

ON

4

G–Sensor Open Circuit or Short

Yes

ON

5

Vehicle Speed Sensor Open Circuit or Short

Yes

OFF

6

Stop Lamp Switch Open Circuit, Short or Contact Point Trouble

Yes

OFF

7

Engine Speed Signal Open Circuit or Short

Yes

OFF

9

Control Unit Abnormality

Yes

OFF

SECTION

INTELLIGENT SUSPENSION

3F–17

DTC2 Actuator Coil Over Current

Circuit Description

The A, B, C, and D are the actuator motor coil terminals.
DC 12V driving voltage is applied between terminals A
and C and terminals B and D so that the shock absorber
oil valves are rotated at every 7.5

°

 step feed.

Diagnostic Aids

D

Inspect the wiring for poor electrical connections
between the control unit 24 way connector and the
actuator connectors. Look for possible bent, backed
out, deformed, or damaged terminals. Check for
weak terminal tension as well.
Also check for a chafed wire that could short to bare
metal or other wiring. Inspect for a broken wire inside
the insulation.

D

When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.

DTC2 Actuator Coil Over Current 

Step

Action

Value(s)

Yes

No

1

1. Turn off the starter switch.
2. Disconnect the actuator connectors C–53, C–51,

F–6, and F–5.

3. Measure the resistance between the actuator side

connector C–51 terminals 1 and 2.

Is the resistance within the specified value?

6.4– 7.2

W

Go to 

Step 2

Go to 

Step 3

2

1. Measure the resistance between the actuator side

connector C–51 terminals 3 and 4.

Is the resistance within the specified value?

6.4– 7.2

W

Go to 

Step 4

Go to 

Step 3

3

Replace the actuator FR.

—

Go to 

Step 4

—

4

1. Measure the resistance between the actuator side

connector C–53 terminals 1 and 2.

Is the resistance within the specified value?

6.4–7.2

W

Go to 

Step 5

Go to 

Step 6

5

1. Measure the resistance between the actuator side

connector C–53 terminals 3 and 4.

Is the resistance within the specified value?

6.4–7.2

W

Go to 

Step 7

Go to 

Step 6

6

Replace the actuator FL.

—

Go to 

Step 7

—

7

1. Measure the resistance between the shock

absorber side connector F–5 terminals 3 and 4.

Is the resistance within the specified value?

6.4–7.2

W

Go to 

Step 8

Go to 

Step 9

8

1. Measure the resistance between the shock

absorber side connector F–5 terminals 7 and 8.

Is the resistance within the specified value?

6.4–7.2

W

Go to 

Step 10

Go to 

Step 9

9

Replace the rear shock absorber RR.

—

Go to 

Step 10

—

10

1. Measure the resistance between the shock

absorber side connector F–6 terminals 3 and 4.

Is the resistance within the specified value?

6.4–7.2

W

Go to 

Step 11

Go to 

Step 12

11

1. Measure the resistance between the shock

absorber side connector F–6 terminals 7 and 8.

Is the resistance within the specified value?

6.4–7.2

W

Go to 

Step 13

Go to 

Step 12

SECTION

3F–18

INTELLIGENT SUSPENSION

DTC2 Actuator Coil Over Current  (Cont’d)

Step

No

Yes

Value(s)

Action

12

Replace the rear shock absorber RL.

—

Go to 

Step 16

—

13

If all steps are correct, check the continuity between the
control unit connector C–56 terminal 1 and connector
terminal C56–4, C56–17, C56–5, C56–18, C56–6,
C56–19, C56–7, C56–20, C56–8, C56–21, C56–9,
C56–22, C56–10, C56–23, C56–11, and C56–24.

Is there continuity?

—

Go to 

Step 15

Go to 

Step 14

14

Repair the circuit.

—

Go to 

Step 16

—

15

Replace the control unit.

—

Go to 

Step 16

—

16

1. Reconnect all components, ensure all components

are properly mounted.

2. Clear the DTC.

Was this step finished?

—

Go to

 “Basic

Diagnosis

Flow”.

Go to 

Step 16

SECTION