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Tests with control unit connected > < Line and component test with basic test box V.A.G 1598/14

Golf Mk2

Checks at wiring harness connector
Checks at wiring harness connector
–  Pull connector from Ecotronic control unit -J184- with ignition switched off (control unit is located in left plenum chamber).
   
–  Connect basic test box -V.A.G 1598/14- with adapter -V.A.G 1598/2--1- to wiring harness connector -2- only (control unit -3- remains free).
–  Carry out check according to following table.
Test table
  V29-0037
–  Measuring range: Switch on voltage measurement -V-.
Test stepThe following is tested
l  Test conditions
–  Additional work
Test box socketsSpecified values → Note
1Ecotronic control unit -J184- voltage supply
l  Ignition switched off
1 + 2Approx. battery voltage
2Ecotronic control unit -J184- voltage supply
–  Switch ignition on
2 + 13Approx. battery voltage
3Voltage signal from selector lever (automatic gearbox only) starter inhibitor and reversing lights switch -E17-
l  Ignition switched on
l  Selector lever set to P and N
2 + 16No voltage
  
–  Switch selector lever to 1, 2, D and R
 Approx. battery voltage
–  Switch off ignition.
–  Connect voltage tester -V.A.G 1527B- with adapters -V.A.G 1594/15- instead of hand-held multimeter -V.A.G 1526C-.
4Rpm signal from transistorized ignition system with Hall sender switch unit -N41-
–  Connect ignition cable terminal 4 to earth
–  Actuate starter -B-
2 + 25LED must flicker

1)  Observe notes → Chapter
   
–  Switch off ignition.
–  Measuring range: Switch on resistance measurement Ω.
Test stepThe following is tested
l  Test conditions
–  Additional work
Test box socketsSpecified values → Note
5Intake manifold temperature sender -G72----5 + 7 → Fig.
6 → NoteCoolant temperature sender -G62----7 + 21 → Fig.
7Test connector for CO content setting and self-diagnosis
–  Hold test connector in engine compartment (blue line, near to ignition distributor) to engine earth (-)
2 + 6Max. 1.5 Ω
8Air flap positioner -V63-
(winding)
–  Carry out test in various air flap positions
–  Read off test value with air flap stationary
10 +121.4…2.2 Ω
9Air flap positioner -V63-
(short-circuit to earth)
–  Carry out test in various air flap positions
2 + 102 + 12∞ Ω

2)  Observe notes → Chapter
3)  If self-diagnosis indicates a sender fault, but this is not ascertained during this test, this may be due to temporary interruption of the temperature signal. In this case, additionally carry out test step 20 (test with control unit connected) → Chapter.
   
l  Ignition switched off
l  Measuring range: Resistance measurement Ω switched on
Test stepThe following is tested
l  Test conditions
–  Additional work
Test box socketsSpecified values → Note
10Throttle valve positioner vent valve -N97----3 + 2320…70 Ω
11Throttle valve positioner breather valve -N117----9 + 2320…70 Ω
12Activated charcoal filter solenoid valve 1 -N80----15 + 2335…55 Ω
13Throttle valve positioner potentiometer -G88- (overall resistance)
–  Pull connector from throttle valve potentiometer -G69-
7 + 181.4…2.6 kΩ
14Throttle valve positioner potentiometer -G88- (resistance in positioning range)
l  Connector pulled from throttle valve potentiometer -G69-
l  Throttle valves in start position (positioners extended fully)
7 + 171.0…2.3 kΩ
  
l  Positioners extended fully
–  Move operating rods radially
 Max. 2.4 kΩ

4)  Observe notes → Chapter
   
Test stepThe following is tested
l  Test conditions
–  Additional work
Test box socketsSpecified values → Note
15Throttle valve positioner potentiometer -G88- (resistance in positioning range)
l  Connector pulled from throttle valve potentiometer -G69-
l  Throttle valves in start position (positioners extended fully)
17 + 18200…600 Ω
16Throttle valve potentiometer -G69- (overall resistance)
l  Connector pulled from throttle valve positioner potentiometer -G88-
7 + 181.4…2.6 kΩ
17Throttle valve potentiometer -G69- (resistance in positioning range)
l  Connector pulled from throttle valve positioner potentiometer -G88-
l  Throttle valves in start position (positioners extended fully)
7 + 11400…800 Ω
18Lead to Lambda probe -G39-
–  Disconnect connector to Lambda probe -G39- and connect black or green lead to earth (-).
2 + 8Max. 1.5 Ω
  
–  Connect connector.
 ∞ Ω
19Earth lead on engine
(cylinder head cover)		---2 + 20Max. 1.5 Ω

5)  Observe notes → Chapter
   

Tests with control unit connected > < Line and component test with basic test box V.A.G 1598/14