Vauxhall Workshop Service and Repair Manuals

Subject:

Brief Checking Procedures for Auxiliary Heaters Not Capable of Diagnosis

Vehicles:

Vectra - B with X 20 DTL engine (as of MY `97)

Condition:

An auxiliary heater is available as optional equipment in conjunction with the X 20 DTL engine (as of MY `97.5 with self - diagnosis). Systems not capable of self - diagnosis are identified by a yellow mark. As of chassis no. 36V1 10491 1, the auxiliary heater is fastened by two screws instead of just one at the rear of the bracket.

Block Diagram:

61   Alternator G2, terminal 61 (alternator running)

31   Terminal 31, ground

30   Terminal 30, battery positive

15   Terminal 15, ignition ON

E42        Auxiliary heater (coolant heating)

S69        Heating intake air temperature switch

M69       Dosing pump (fuel dosing pump)

X13        Diagnostic plug, 16 - pin (in system without self - diagnosis, not connected in wiring harness)

Note:      The digits within E42 indicate the connections of the 8 - pin auxiliary heater plug.

Function:

The auxiliary heater is based on the fuel - fired parking heating system. It is connected to the heating circuit and serves to accelerate heating of the coolant at low ambient temperatures. In the event of extreme cold, the interior warms up more quickly, ensuring that the windscreen area defrosts more rapidly.

A, Brief checking procedures for auxiliary heaters not capable of diagnosis

Test

Work order description

Nominal value

T01

Function check

·     Function check of auxiliary heater according to specified test conditions

No function

Yes T02

No  E01

T02

Introductory inspection

·     Check battery condition

·     Check fuses F28 and F38

·     Check all wiring harness plugs and system unit plugs

·     Check fastening of grounding point 1

·     Check fuel and coolant lines for leaks

All components OK

Yes T03

No  E02

T03

Check voltage supply for auxiliary heater

·     Detach 8 - pin auxiliary heater plug

·     Measure voltage between following terminals:

       8 - pin auxiliary heater plug, terminal 1

       and

       ground

greater than 10 V

Yes T04

No  E03

T04

Check voltage supply for auxiliary heater

·     Detach 8 - pin auxiliary heater plug

·     Measure voltage between following terminals:

       8 - pin auxiliary heater plug, terminal 2

       and

       ground

less than 0.1 V

Yes T05

No  E04

T05

Check voltage supply for auxiliary heater

·     Detach 8 - pin auxiliary heater plug

·     Detach 2 - pin temperature switch plug (S69) from microfilter and bridge

·     Ignition ON

·     Measure voltage between following terminals:

       8 - pin auxiliary heater plug, terminal 6

       and

       ground

greater than 10 V

T06

Check voltage supply for auxiliary heater

·     Detach 8 - pin auxiliary heater plug

·     Measure voltage between following terminals:

       8 - pin auxiliary heater plug, terminal 7

       and

       ground

less than 0.1 V

·     Start engine

greater than 10 V

Yes: T07

No:        E06

T07

Check voltage supply for auxiliary heater

RHD vehicles only:

·     Detach auxiliary heater bracket from bulkhead (3 nuts - M6)

·     Unscrew dosing pump from auxiliary heater bracket (1 bolt - M6)

·     Disconnect fuel hose between dosing pump and auxiliary pump at auxiliary pump (1 clamp)

·     Detach exhaust line from auxiliary heater

·     Detach 2 - pin dosing pump plug and 8 - pin auxiliary heater plug

·     Remove dosing pump upwards

All vehicles:

·     Detach 2 - pin dosing pump plug

·     Connect one connection of dosing pump to battery  positive terminal using corresponding adapter cable       from the Electronic - Kit Dosing pump

·     Pulse the other dosing pump connection to the battery operates audibly negative terminal using corresponding adapter cable at regular, brief intervals

Yes E07

No:        E48

Result

Cause of fault

E01

·     Auxiliary heater system operating without fault

E02

·     Fuse F28 or F38 defective

       or

·     Battery voltage too low

       or

·     Grounding point fastening inadequate

       or

·     Fuel or coolant lines leaky

-      Replace relevant fuse after eliminating the cause of it blowing

-      Charge battery

-      Fasten grounding point 1 correctly

-      Eliminate leak

E03

·     Circuit interruption between:

       Fuse F28

       and

       8 - pin auxiliary heater plug, terminal 1, red cable (1.5 mm2)

-      Eliminate interruption in circuit

E04

·     Circuit interruption between:

8 - pin auxiliary heater plug, terminal 2

       and

       ground, brown cable (1.5 mm²)

-      Eliminate interruption in circuit

E05

·     Circuit interruption between:

       8 - pin auxiliary heater plug, terminal 6

       and

       2 - pin heating intake air temperature switch plug (S69),

       black / white cable (0.5 mm²)

       or

·     Circuit interruption between

       2 - pin heating intake air temperature switch plug (S69)

       and

       fuse F38, black cable (0.5 mm²)

-      Eliminate interruption in circuit

E06

·     Circuit interruption between:

       8 - pin auxiliary heater plug, terminal 7

       and

       alternator, terminal 61, blue / white cable (0.5 mm²)

-      Eliminate interruption in circuit

E07

·     Auxiliary heater defective

-      Replace auxiliary heater

E08

·     Dosing pump defective

-      Replace dosing pump

Designation

Part no.

Catalogue no.

Auxiliary Heater, not capable of diagnosis

90 508 550

18 26 008

(LHD and RHD identical)

Dosing Pump

90 508 548

18 26 005

Auxiliary Heater Bracket, LHD

90 508 552

18 26 006

Auxiliary Heater Bracket, RHD

90 508 559

18 26 007

Op. no.

Operation

hrs

J 4988 00

Quick Check Auxiliary Heater (Coolant)

. 2

TC: 99

Add:

001

Check dosing pump

LHD

RHD

W 1000 00

Vehicle from Parkina Place to Workplace and Back

. 2

TC: 99