Ignition-Glow Plug System - 2.0L, Aba (A3 Platform) (A3 Platform): Diagnosis Volkswagen Golf Mk3

Test conditions

1. Crankshaft and camshaft in no. 1 cylinder TDC position

Scheme 241

1. Remove distributor.
2. Before installing the distributor, align oil pump shaft drive tongue parallel to crankshaft. (Scheme 241): Aligning Oil Pump Shaft Drive Tongue Parallel To Crankshaft
3. Install distributor. The pins on the distributor must point toward mounting bolt threaded hole (arrow).

Installing Distributor. Scheme 242

Note. When installing, turn rotor arm slightly right of the distributor marking. When inserting, rotor arm will turn back to the marking.

Identifying Alignment Of Distributor Mark With Rotor Arm. Scheme 243

1. Mark on distributor must align with mark on rotor arm or camshaft position sensor cover.

1. Tighten distributor mounting bolt. Tightening torque: 25 Nm (18 ft lb)

If not able to align markings

Scheme 244

1. Loosen belt tensioner and take toothed drive belt off camshaft sprocket.
2. Turn intermediate shaft sprocket with toothed drive belt in direction shown (arrow), until rotor arm aligns with markings for no. 1 cylinder on distributor housing (toothed drive belt slides over crankshaft sprocket). (Scheme 244): Identifying Direction For Turning Intermediate Shaft Sprocket With Toothed Drive Belt

1. Mark on distributor must align with mark on rotor arm or camshaft position sensor cover.

Scheme 245

Scheme 246

1. Place toothed drive belt on belt tensioner and camshaft sprocket. NOTE: For easier installation of the toothed drive belt, loosen belt tensioner lock nut only approx. one thread. (Scheme 245): Identifying Alignment Of Distributor Mark Rotor Arm
2. To tighten toothed drive belt, turn tensioner with pin wrench (e.g. Matra V159) in direction shown (arrow). (Scheme 246): Tightening Toothed (Timing) Belt Drive

1. Drive belt is correctly tensioned if it can be turned 90 degrees with the thumb and forefinger halfway between camshaft and intermediate shaft sprockets.

1. Tighten tensioner lock nut.
2. Tightening torque: 45 Nm (33 ft lb)
3. Rotate crankshaft two full turns and check adjustment.
4. Check distributor housing and rotor arm markings.
5. Install upper toothed belt protective cover.
6. Before installing, clean distributor cap and check for cracks and signs of carbon tracking, replace if necessary.

1. Electrical consumers turned off (radiator coolant fan must not run during the check)
2. Air conditioner turned off

Scheme 247

Scheme 248

Scheme 249

1. Connect VAG 1551 scan tool (VAG 1552) and select "Engine Electronics" address word 01. See «VAG 1551 SCAN TOOL (ST), CONNECTING AND SELECTING "ENGINE ELECTRONICS" ADDRESS WORD 01»(ref-203892-S02061160712005110800000). When doing this the engine must be running at idle speed. (Scheme 247): VAG 1551/1552 Scan Tool Display For Checking Ignition Timing (1 Of 3) Indicated on display
2. Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input. (Scheme 248): VAG 1551/1552 Scan Tool Display For Checking Ignition Timing (2 Of 3) Indicated on display
3. Press buttons -0-, -1- and -0- to input display group 010 and press -Q- button to confirm input. (Scheme 249): VAG 1551/1552 Scan Tool Display For Checking Ignition Timing (3 Of 3) Indicated on display (1-4 = Display fields)
4. Check measured values for ignition (display fields 3 and 4).

DISPLAY GROUP 010: IGNITION 1

1. Read the readiness code. See «READINESS CODE, READING (SCAN TOOL FUNCTION 15»(ref-203892-S38778616292005110800000) ). If DTC memory has been erased, verify repair via appropriate display group. See «READINESS CODE, CREATING»(ref-203892-S31097275142005110800000) .
2. Press --> button.
3. Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.

1. Electrical consumers turned off (radiator coolant fan must not run during the check)
2. Air conditioner turned off
3. Engine oil temperature at least 80 ° C (176 ° F)

Scheme 250

Scheme 251

Scheme 252

1. Connect VAG 1551 scan tool (VAG 1552) and select "Engine Electronics" address word 01. See «VAG 1551 SCAN TOOL (ST), CONNECTING AND SELECTING "ENGINE ELECTRONICS" ADDRESS WORD 01»(ref-203892-S02061160712005110800000). When doing this the engine must be running at idle speed. (Scheme 250): VAG 1551/1552 Scan Tool Display For Checking Ignition Timing Control (1 Of 3) Indicated on display
2. Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input. (Scheme 251): VAG 1551/1552 Scan Tool Display For Checking Ignition Timing Control (2 Of 3) Indicated on display
3. Press buttons -0-, -1- and -0- to input display group 010 and press -Q- button to confirm input. (Scheme 252): VAG 1551/1552 Scan Tool Display For Checking Ignition Timing Control (3 Of 3) Indicated on display (1-4 Display fields)
4. Check the measured values for ignition timing control (display fields 1-4).

DISPLAY GROUP 010: IGNITION 1