Opel Frontera UBS. Manual - part 712

 

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Opel Frontera UBS. Manual - part 712

 

 

8D–278

WIRING SYSTEM

Parts Location (LHD)

Legend

(1) B-52
(2) H-7, H-8, H-25
(3) H-32
(4) Fuse Box
(5) B-16
(6) B-13
(7) Mode Switch (M-25)

(8) H-10, H-11, H-53
(9) Cruise Control Unit (B-9)

(10) C-37
(11) Relay and Fuse Box
(12) H-12, H-48
(13) B-2
(14) I-6
(15) I-9

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

D08RW394

WIRING SYSTEM

8D–279

Diagnosis

The cruise control unit uses the cruise main indicator light and diagnoses the failure, when the control unit
detects abnormality on the table below.

PART

POSIBLE CAUSE

DETECTION PERIOD

DTC

Motor system short circuit

Energizing motor

1–1

Clutch system short circuit

Energizing clutch

1–2

Actuator

Clutch system open circuit

Energizing clutch

1–2

Mechanical defect

Cruise controlling

1–3

Close side of motor system open circuit

Cruise controlling

1–1

Cruise

Open side of motor system continuously energizing

While starter sw on

1–4

control unit

Clutch output abnormality

While starter sw on

1–4

Vehicle

Signal of vehicle speed disconnection

Cruise controlling

2–1

speed sensor

Signal of vehicle speed abnormality

Cruise controlling

2–1

Switch

Turning on switch at all times

While starter sw on

3–1

Turning on switch at the same time.

While starter sw on

3–1

DTC: Diagnostic Trouble Code

DTC Display Condition

1.

While starter swi

tch on and vehicle speed is 0 km/h, the DTC output begins in top priority by cancel switch

turn on and off being repeated three times for 2 sec. while cruise main switch pushing on, and stops the
DTC output whether vehicle speed is more than 10 km/h or the resume switch is turned on.

2.

The cruise control unit outputs the DTC(s) in order from small figure of the code.

3.

The header of display of DTC(s) is assumed 4 sec., and it is 2 sec. between different kind of codes.

4.

The DTC(s) are 

erased with the starter switch turned off.

DTC Display Format

1.

When no DTCs are detected. (The unit : sec.)

2.

When two or more DTCs are detected. (The unit ; sec.)

0.25 0.25

Code 1–1

Code 2–2

4

1

0.5

1

1

1

1

1

1

1

2

8D–280

WIRING SYSTEM

DTC 1–1 Motor System Short Circuit

STEP

ACTION

VALUE(S)

YES

NO

1. Turn the starter switch off.
2. Disconnect the actuator connector C–37.
3. Measure resistance between actuator side connector

terminal 1 and 2.

NOTE: If control plate position is fully opened or fully
closed, resistance can not be measured.
Is the resistance within range specified in the value(s)
column?

Measure continuity between harness side connector C–37
terminal 1 and the ground, terminal 2 and the ground, and
terminal 1 and 2.
Are the results same as specified in the value(s) columns?

More than 4.2

No continuity

Go to
step 2

Replace
the control
unit

Replace
the
actuator

Repair or
replace
the
harness

1

2

WIRING SYSTEM

8D–281

DTC 1–2 Clutch System Open or Short Circuit

STEP

ACTION

VALUE(S)

YES

NO

1. Turn the starter switch off.
2. Disconnect the actuator connector C–37.
3. Measure resistance between actuator side connector

terminal 3 and 4.

Is the resistance within range specified in the value(s)
column?

1. Disconnect the brake switch connector B–13.
2. Check continuity between switch side connector terminal 2

and 3.

Is there continuity between terminals?

1. Reconnect the brake switch connector B–13.
2. Check continuity between harness side connector B–9

terminal 6 and connector C–37 terminal 3, connector C–37
terminal 4 and connector B–9 terminal 8.

Is there continuity between terminals?

Is there continuity between harness side connector C–37
terminal 3 and the ground, connector C–37 terminal 4 and
the ground, connector B–9 terminal 6 and the ground?
Are the results same as specified in the value(s) column?

34.7 – 42.4

No continuity

Go to
step 2

Go to
step 3

Go to
step 4

Replace
the control
unit

Replace
the
actuator

Adjust  the
switch or
replace it

Repair
open
circuit

Repair
short
circuit

1

2

3

4

 

 

 

 

 

 

 

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