CEL, 16711 p0327, knock sensor 1 signal too low wtf does that mean!?
06-29-2007, 03:50 PM
#2
Keeper of the Cash
From the repair manual:
1.8 Liter 4-Cyl. 5V Turbo Fuel Injection & Ignition
28 - Ignition/Glow plug systemKnock sensor and knock sensor system, checking
Required special tools and test equipment:
- VAG 1551/1552 Scan Tool (ST) with adapter cable VAG 1551/3
- VAG 1598/22 test box
- Multimeter US 1119 (Fluke 83 or equivalent)
- VW 1594 connector test kit
- Wiring diagrams
Checking:
Connect VAG 1551/1552 Scan Tool (ST) and press buttons -0- and -1- to insert "Engine Electronics" address word 01
Select function XX Indicated on display
Press buttons -0- and -8- to select "Read Measuring Value Block" function 08, and press -Q- button to confirm input.
Read Measuring Value Block HELP
Input display group number XXX Indicated on display
Press buttons -0-, -2- and -0- to input display group number 20, and press -Q- button to confirm input.
Read Measuring Value Block 20 ?
1 2 3 4 Indicated on display (1-4 = display groups)
Note:
The test must be carried out during a road test because the knock sensor system is only active at a certain engine speed.
Road test car and compare display with specified values for knock sensor system in display field 1-4.
WARNING!
A second technician is required to operate the VAG 1551 scan tool during the road test.
Display groups:
1
2
3
4
Display group 20: Knock sensor system
Display
xx.x °
xx.x °
xx.x °
xx.x °
Indicates
Timing correction,
cylinder 1
Timing correction,
cylinder 2
Timing correction
cylinder 3
Timing correction,
cylinder 4
Range
0.0 ° -15.0 °
(crankshaft)
0.0 ° -15.0 °
(crankshaft)
0.0 ° -15.0 °
(crankshaft)
0.0 ° -15.0 °
(crankshaft)
Specified value
0.0 ° -10.0 °
(crankshaft)
0.0 ° -10.0 °
(crankshaft)
0.0 ° -10.0 °
(crankshaft)
0.0 ° -10.0 °
If displayed values are NOT OK => page 28-7, Evaluating display group 20
If displayed values are OK:
Check readiness code => page AUDI-B5-FU02-01-002-0101-70. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code => page AUDI-B5-FU02-01-002-0201-73.
Press ? button to advance program sequence.
Press buttons -0- and -6- to select "End Output" function 06, and press -Q- button to confirm input.
Evaluating display group 20
Display group: 20
Display fields: 1-4
Possible cause
Correcting action
All cylinders retarded more than 10 ° (crankshaft)
Knock sensor faulty
Continuation => page 28-8
Connector corroded
-Clean contact
Knock sensor incorrectly torqued
-Loosen knock sensor and re-tighten to 20 Nm (15 ft lb)
Components loose on engine
-Tighten components
Poor fuel quality
-Change fuel
One cylinder reading is very different from the others
-Connector corroded
-Continuation => page 28-8
Engine failure
-Check compression => Repair Manual, 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AEB, ATW, Repair Group 15
Components loose on engine
-Tighten components
Continuation
Disconnect 3-pin connector from Knock Sensor (KS) 1 -G61-.
Connect multimeter US 1119 (Fluke 83 or equivalent) to measure resistance between connector terminals, using adapter cables from VW 1594 connector test kit.
Connector terminal 1 to terminal 2
Connector terminal 1 to terminal 3
Connector terminal 2 to terminal 3
Specified value: Inf Ohms
If resistance is OK (no continuity):
Connect VAG 1598/22 test box to Motronic ECM harness connector => page 01-70.
Check wiring for open circuit between ECM/test box and 3-pin harness connector, according to wiring diagram.
Connector terminal 1 to ECM/test box socket 68
Connector terminal 2 to ECM/test box socket 67
Connector terminal 3 to ECM/test box socket 2
Specified value: max. 1.5 Ohms
Check wiring for short circuits between terminals of 3-pin connector, and between connector and ECM/test box.
Connector terminal 2 to ECM/test box socket 68
Connector terminal 3 to ECM/test box socket 68
Connector terminal 3 to ECM/test box socket 67
Specified value: Inf Ohms
If the wiring is OK:
Loosen knock sensor and re-tighten to 20 Nm (15 ft lb).
If the malfunction still exists (stored in DTC memory):
Replace Knock Sensor (KS) 1 -G61-.
Check readiness code => page AUDI-B5-FU02-01-002-0101-70. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code => page AUDI-B5-FU02-01-002-0201-73.
Disconnect 3-pin connector from Knock Sensor (KS) 2 -G66-.
Connect multimeter US 1119 (Fluke 83 or equivalent) to measure resistance between connector terminals, using adapter cables from VW 1594 connector test kit.
Connector terminal 1 to terminal 2
Connector terminal 1 to terminal 3
Connector terminal 2 to terminal 3
Specified value: Inf Ohms
If resistance is OK (no continuity):
Connect VAG 1598/22 test box to Motronic ECM harness connector => page AUDI-B5-FU02-01-001-1201-67.
Check wiring for open circuit between ECM/test box and 3-pin harness connector, according to wiring diagram.
Connector terminal 1 to ECM/test box socket 60
Connector terminal 2 to ECM/test box socket 67
Connector terminal 3 to ECM/test box socket 2
Specified value: max. 1.5 Ohms
Check wiring for short circuits between terminals of 3-pin connector, and between connector and ECM/test box.
Connector terminal 2 to ECM/test box socket 60
Connector terminal 3 to ECM/test box socket 60
Connector terminal 3 to ECM/test box socket 67
Specified value: Inf Ohms
If the wiring is OK:
Loosen knock sensor and re-tighten to 20 Nm (15 ft lb).
If the malfunction still exists (stored in DTC memory):
Replace Knock Sensor (KS) 2 -G66-.
Check readiness code => page AUDI-B5-FU02-01-002-0101-70. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code => page AUDI-B5-FU02-01-002-0201-73.
28 - Ignition/Glow plug systemKnock sensor and knock sensor system, checking
Required special tools and test equipment:
- VAG 1551/1552 Scan Tool (ST) with adapter cable VAG 1551/3
- VAG 1598/22 test box
- Multimeter US 1119 (Fluke 83 or equivalent)
- VW 1594 connector test kit
- Wiring diagrams
Checking:
Connect VAG 1551/1552 Scan Tool (ST) and press buttons -0- and -1- to insert "Engine Electronics" address word 01
Select function XX Indicated on display
Press buttons -0- and -8- to select "Read Measuring Value Block" function 08, and press -Q- button to confirm input.
Read Measuring Value Block HELP
Input display group number XXX Indicated on display
Press buttons -0-, -2- and -0- to input display group number 20, and press -Q- button to confirm input.
Read Measuring Value Block 20 ?
1 2 3 4 Indicated on display (1-4 = display groups)
Note:
The test must be carried out during a road test because the knock sensor system is only active at a certain engine speed.
Road test car and compare display with specified values for knock sensor system in display field 1-4.
WARNING!
A second technician is required to operate the VAG 1551 scan tool during the road test.
Display groups:
1
2
3
4
Display group 20: Knock sensor system
Display
xx.x °
xx.x °
xx.x °
xx.x °
Indicates
Timing correction,
cylinder 1
Timing correction,
cylinder 2
Timing correction
cylinder 3
Timing correction,
cylinder 4
Range
0.0 ° -15.0 °
(crankshaft)
0.0 ° -15.0 °
(crankshaft)
0.0 ° -15.0 °
(crankshaft)
0.0 ° -15.0 °
(crankshaft)
Specified value
0.0 ° -10.0 °
(crankshaft)
0.0 ° -10.0 °
(crankshaft)
0.0 ° -10.0 °
(crankshaft)
0.0 ° -10.0 °
If displayed values are NOT OK => page 28-7, Evaluating display group 20
If displayed values are OK:
Check readiness code => page AUDI-B5-FU02-01-002-0101-70. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code => page AUDI-B5-FU02-01-002-0201-73.
Press ? button to advance program sequence.
Press buttons -0- and -6- to select "End Output" function 06, and press -Q- button to confirm input.
Evaluating display group 20
Display group: 20
Display fields: 1-4
Possible cause
Correcting action
All cylinders retarded more than 10 ° (crankshaft)
Knock sensor faulty
Continuation => page 28-8
Connector corroded
-Clean contact
Knock sensor incorrectly torqued
-Loosen knock sensor and re-tighten to 20 Nm (15 ft lb)
Components loose on engine
-Tighten components
Poor fuel quality
-Change fuel
One cylinder reading is very different from the others
-Connector corroded
-Continuation => page 28-8
Engine failure
-Check compression => Repair Manual, 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AEB, ATW, Repair Group 15
Components loose on engine
-Tighten components
Continuation
Disconnect 3-pin connector from Knock Sensor (KS) 1 -G61-.
Connect multimeter US 1119 (Fluke 83 or equivalent) to measure resistance between connector terminals, using adapter cables from VW 1594 connector test kit.
Connector terminal 1 to terminal 2
Connector terminal 1 to terminal 3
Connector terminal 2 to terminal 3
Specified value: Inf Ohms
If resistance is OK (no continuity):
Connect VAG 1598/22 test box to Motronic ECM harness connector => page 01-70.
Check wiring for open circuit between ECM/test box and 3-pin harness connector, according to wiring diagram.
Connector terminal 1 to ECM/test box socket 68
Connector terminal 2 to ECM/test box socket 67
Connector terminal 3 to ECM/test box socket 2
Specified value: max. 1.5 Ohms
Check wiring for short circuits between terminals of 3-pin connector, and between connector and ECM/test box.
Connector terminal 2 to ECM/test box socket 68
Connector terminal 3 to ECM/test box socket 68
Connector terminal 3 to ECM/test box socket 67
Specified value: Inf Ohms
If the wiring is OK:
Loosen knock sensor and re-tighten to 20 Nm (15 ft lb).
If the malfunction still exists (stored in DTC memory):
Replace Knock Sensor (KS) 1 -G61-.
Check readiness code => page AUDI-B5-FU02-01-002-0101-70. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code => page AUDI-B5-FU02-01-002-0201-73.
Disconnect 3-pin connector from Knock Sensor (KS) 2 -G66-.
Connect multimeter US 1119 (Fluke 83 or equivalent) to measure resistance between connector terminals, using adapter cables from VW 1594 connector test kit.
Connector terminal 1 to terminal 2
Connector terminal 1 to terminal 3
Connector terminal 2 to terminal 3
Specified value: Inf Ohms
If resistance is OK (no continuity):
Connect VAG 1598/22 test box to Motronic ECM harness connector => page AUDI-B5-FU02-01-001-1201-67.
Check wiring for open circuit between ECM/test box and 3-pin harness connector, according to wiring diagram.
Connector terminal 1 to ECM/test box socket 60
Connector terminal 2 to ECM/test box socket 67
Connector terminal 3 to ECM/test box socket 2
Specified value: max. 1.5 Ohms
Check wiring for short circuits between terminals of 3-pin connector, and between connector and ECM/test box.
Connector terminal 2 to ECM/test box socket 60
Connector terminal 3 to ECM/test box socket 60
Connector terminal 3 to ECM/test box socket 67
Specified value: Inf Ohms
If the wiring is OK:
Loosen knock sensor and re-tighten to 20 Nm (15 ft lb).
If the malfunction still exists (stored in DTC memory):
Replace Knock Sensor (KS) 2 -G66-.
Check readiness code => page AUDI-B5-FU02-01-002-0101-70. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code => page AUDI-B5-FU02-01-002-0201-73.
06-29-2007, 04:02 PM
#5
AudiWorld Senior Member
Thread Starter
Join Date: Oct 2002
Posts: 1,217
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well i'll log block 20 and check the resistance @ the sensor end, see where i'm at :/, dealer just..
replaced vcg/adjuster gasket but i don't think that's related to this (warranty), hopefully engine's fuxxed and they wanna give me a new one :P
