96 A4 2.8 auto: won't start (no spark) after trans change
11-14-2010, 06:09 AM
#11
AudiWorld Senior Member
Thread Starter
VAGcom scan log
I plugged the VAGcom in yesterday. Here is the log (below).
Is there anything that looks wrong with respect to the problem on hand (no start, no spark, no MIL light)?
Would something be detected (with just ignition on but engine not running) that would help to troubleshoot?
Saturday,13,November,2010,12:48:53:22662
VCDS Version: Release 10.6.1
Data version: 20100831
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Chassis Type: 8D - Audi A4 B5
Scan: 01 02 03 08 15 16 17 25 35 37 45 55 56 57 67 75 76 77
Mileage: 211470km/131401miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: None
Part No: 8D0 906 266 B
Component: 2,8l V6/2V MPI OBD2 D01
Coding: 01251
Shop #: WSC 06325
VCID: 2B5BF371F377
No fault code found.
Readiness: N/A
-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 01V-927-156.lbl
Part No: 8D0 927 156 J
Component: AG5 01V 2.8l2V US D89
Coding: 00000
Shop #: WSC 00000
VCID: 3469E80D2E49
1 Fault Found:
00526 - Brake Light Switch-F
27-00 - Implausible Signal
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 4D0-907-379-ABS.lbl
Part No: 4D0 907 379 J
Component: ABS/EDS BOSCH 5 7679
Shop #: BB 37679
VCID: 356FD5092533
No fault code found.
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8L0-820-043-2D.lbl
Part No: 8L0 820 043 D
Component: A4 KLIMAVOLLAUTOMAT_D75
Coding: 04162
Shop #: WSC 06325
VCID: 29570979F98B
8 Faults Found:
00779 - Outside Air Temp Sensor (G17)
30-10 - Open or Short to Plus - Intermittent
01271 - Positioning Motor for Temperature Flap (V68)
41-10 - Blocked or No Voltage - Intermittent
01274 - Air Flow Flap Positioning Motor (V71)
41-10 - Blocked or No Voltage - Intermittent
00792 - A/C Pressure Switch (F129)
31-00 - Open or Short to Ground
01297 - Sensor for Vent Temperature; Footwell (G192)
30-00 - Open or Short to Plus
01296 - Sensor for Vent Temperature; Center (G191)
30-00 - Open or Short to Plus
01206 - Signal for Duration of Ignition Off Time
27-10 - Implausible Signal - Intermittent
01582 - Signal for Coolant Temperature
30-00 - Open or Short to Plus
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8A0-959-655.lbl
Part No: 8A0 959 655 D
Component: Airbag V AUDI D00
Coding: 00127
Shop #: WSC 06334
VCID: 3469E80D2E49
4 Faults Found:
65535 - Internal Control Module Memory Error
00-10 - - - Intermittent
00532 - Supply Voltage B+
07-10 - Signal too Low - Intermittent
00588 - Airbag Igniter; Driver Side (N95)
32-10 - Resistance too High - Intermittent
01025 - Trigger for On Board Diagnostic Lamp; Malfunction
31-10 - Open or Short to Ground - Intermittent
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8D0-919-0xx-17.lbl
Part No: 8D0 919 035 G
Component: B5-KOMBIINSTRUMENT D08
Coding: 00262
Shop #: WSC 02032
VCID: 2E5DFA65C065
No fault code found.
End ---------------------------------------------------------------------
Is there anything that looks wrong with respect to the problem on hand (no start, no spark, no MIL light)?
Would something be detected (with just ignition on but engine not running) that would help to troubleshoot?
Saturday,13,November,2010,12:48:53:22662
VCDS Version: Release 10.6.1
Data version: 20100831
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Chassis Type: 8D - Audi A4 B5
Scan: 01 02 03 08 15 16 17 25 35 37 45 55 56 57 67 75 76 77
Mileage: 211470km/131401miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: None
Part No: 8D0 906 266 B
Component: 2,8l V6/2V MPI OBD2 D01
Coding: 01251
Shop #: WSC 06325
VCID: 2B5BF371F377
No fault code found.
Readiness: N/A
-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 01V-927-156.lbl
Part No: 8D0 927 156 J
Component: AG5 01V 2.8l2V US D89
Coding: 00000
Shop #: WSC 00000
VCID: 3469E80D2E49
1 Fault Found:
00526 - Brake Light Switch-F
27-00 - Implausible Signal
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 4D0-907-379-ABS.lbl
Part No: 4D0 907 379 J
Component: ABS/EDS BOSCH 5 7679
Shop #: BB 37679
VCID: 356FD5092533
No fault code found.
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8L0-820-043-2D.lbl
Part No: 8L0 820 043 D
Component: A4 KLIMAVOLLAUTOMAT_D75
Coding: 04162
Shop #: WSC 06325
VCID: 29570979F98B
8 Faults Found:
00779 - Outside Air Temp Sensor (G17)
30-10 - Open or Short to Plus - Intermittent
01271 - Positioning Motor for Temperature Flap (V68)
41-10 - Blocked or No Voltage - Intermittent
01274 - Air Flow Flap Positioning Motor (V71)
41-10 - Blocked or No Voltage - Intermittent
00792 - A/C Pressure Switch (F129)
31-00 - Open or Short to Ground
01297 - Sensor for Vent Temperature; Footwell (G192)
30-00 - Open or Short to Plus
01296 - Sensor for Vent Temperature; Center (G191)
30-00 - Open or Short to Plus
01206 - Signal for Duration of Ignition Off Time
27-10 - Implausible Signal - Intermittent
01582 - Signal for Coolant Temperature
30-00 - Open or Short to Plus
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8A0-959-655.lbl
Part No: 8A0 959 655 D
Component: Airbag V AUDI D00
Coding: 00127
Shop #: WSC 06334
VCID: 3469E80D2E49
4 Faults Found:
65535 - Internal Control Module Memory Error
00-10 - - - Intermittent
00532 - Supply Voltage B+
07-10 - Signal too Low - Intermittent
00588 - Airbag Igniter; Driver Side (N95)
32-10 - Resistance too High - Intermittent
01025 - Trigger for On Board Diagnostic Lamp; Malfunction
31-10 - Open or Short to Ground - Intermittent
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8D0-919-0xx-17.lbl
Part No: 8D0 919 035 G
Component: B5-KOMBIINSTRUMENT D08
Coding: 00262
Shop #: WSC 02032
VCID: 2E5DFA65C065
No fault code found.
End ---------------------------------------------------------------------
11-14-2010, 06:12 AM
#12
AudiWorld Senior Member
Thread Starter
Typical suspects: cam, crank sensor?
No spark and car not starting: typical suspects are sensors that (if they fail to communicate properly with the ECU) tell the ECU to 'shut up'.
Even so I did NOT do anything directly at the engine, what can I do to ensure the signal from the cam sensors, cranks sensor and other sensors are 'OK'?
Even so I did NOT do anything directly at the engine, what can I do to ensure the signal from the cam sensors, cranks sensor and other sensors are 'OK'?
11-14-2010, 06:15 AM
#13
AudiWorld Senior Member
Thread Starter
Tracing back the 'no spark'
Where should I start trying to (if possible) trace back the 'no spark'?
I started with the plug (no spark).
What to measure/check next. Coil? Where should I measure what?
From there, I thing it goes to this gismo (photo below). What can/should I measure there?
I started with the plug (no spark).
What to measure/check next. Coil? Where should I measure what?
From there, I thing it goes to this gismo (photo below). What can/should I measure there?
11-14-2010, 06:19 AM
#14
AudiWorld Senior Member
Thread Starter
Plugged in right?
Just to be sure (I assumed the connectors are 'coded' so they only fit one way): do I have all connectors plugged in right?
11-14-2010, 06:27 AM
#15
AudiWorld Senior Member
Thread Starter
Transmission sensor - parts - location
In the photo below is one sensor (what is it), a bracket (seems that a wire is coming from underneath) and a hole.
Can someone tell me what they are/are for. Is the hole supposed to be open? what for? does anything go there?
Can someone tell me what they are/are for. Is the hole supposed to be open? what for? does anything go there?
11-15-2010, 04:53 PM
#16
The sensor behind the heat shield measures the flywheel speed by sensing the ring gear teeth movement (but does not reference the crank position). The other sensor mounted in the engine block below the motor mount monitors crankshaft position.
11-15-2010, 04:59 PM
#17
[QUOTE=vtraudt;24061044]
Flywheel speed sensor is located behind the heatshield on front/left side of transmission. Measure correct continuity for it at the grey firewall connector (next to the black crank position reference sensor).
GrayJay, I did the check below. I measured in both cases 2x infinite and 1x 0.1 Ohm. So the 2 sensor from that stand point seem ok.
THe leftmost grey colored one is the flywheel speed sensor connection, the next (black) connector is for the crank position sensor. It looks as if both of these sensors are identical and are probably interchangeable (the crank sensor just needs 2 o-rings on it that the flywheel speed sensor does not use.) IF you pull the top off these two connectors you should be able to use a multi-meter to verify that 2 of the 3 pins are connected to eachother with less than 1 ohm reseistance and that those two are both open (completely disconnected) to the third pin wich is the shielding ground.
You mentione a 'flywheel speed sensor'. Where is it located? How does it look like? I certainly would like to check it out. Even so the sensor may and wiring may be ok, it may still not give a signal and the ECU won't allow spark?
The flywheel speed sensor measures speed from each of the ring gear teeth. THe bracket that holds the sensor is adjustable via slots for the mounting bolts.
THe leftmost grey colored one is the flywheel speed sensor connection, the next (black) connector is for the crank position sensor. It looks as if both of these sensors are identical and are probably interchangeable (the crank sensor just needs 2 o-rings on it that the flywheel speed sensor does not use.) IF you pull the top off these two connectors you should be able to use a multi-meter to verify that 2 of the 3 pins are connected to eachother with less than 1 ohm reseistance and that those two are both open (completely disconnected) to the third pin wich is the shielding ground.
You mentione a 'flywheel speed sensor'. Where is it located? How does it look like? I certainly would like to check it out. Even so the sensor may and wiring may be ok, it may still not give a signal and the ECU won't allow spark?
The flywheel speed sensor measures speed from each of the ring gear teeth. THe bracket that holds the sensor is adjustable via slots for the mounting bolts.
Flywheel speed sensor is located behind the heatshield on front/left side of transmission. Measure correct continuity for it at the grey firewall connector (next to the black crank position reference sensor).
11-16-2010, 03:46 AM
#18
AudiWorld Senior Member
Thread Starter
[QUOTE=grayjay;24061773]
I checked the crank sensor, which on the SOHC sits forward, on the engine block. The hole in the picture, on the trans, seem to be reserved for the DOHC crank, right?
The resistance value for the crank was 0.985 kOhm (center to one of the outer pins), so within the specified range of 0.675-1.112k. I will check the flywheel speed sensor. Does anyone know the value? And how is it called in Audi lingo?
Which is the "Engine Speed Sensor", which is the "Crankshaft Position Sensor".
And while we are at it, lets label all 4 for reference.
From driver side to passenger side, the connectors are:
grey/flywheel speed sensor
black/crank position reference sensor
grey ????
blue ????
The resistance value for the crank was 0.985 kOhm (center to one of the outer pins), so within the specified range of 0.675-1.112k. I will check the flywheel speed sensor. Does anyone know the value? And how is it called in Audi lingo?
Which is the "Engine Speed Sensor", which is the "Crankshaft Position Sensor".
And while we are at it, lets label all 4 for reference.
From driver side to passenger side, the connectors are:
grey/flywheel speed sensor
black/crank position reference sensor
grey ????
blue ????
11-16-2010, 04:32 AM
#19
AudiWorld Senior Member
Thread Starter
Flywheel sensor
How are the sensors 'officially' called?
I found (for example rock auto):
- crank shaft position sensor
- cam shaft position sensor
Not found: flywheel speed sensor
In Haynes, they talk about Engine Speed Sensor.
I found (for example rock auto):
- crank shaft position sensor
- cam shaft position sensor
Not found: flywheel speed sensor
In Haynes, they talk about Engine Speed Sensor.
11-17-2010, 05:31 AM
#20
AudiWorld Senior Member
Thread Starter
Anti Theft cut spark, no MIL ??
Still desperately troubleshooting the crank but no spark, no MIL issue.
Since I had disconnected the battery for several weeks, is it possible that an Anti Theft can do that?
Does a 1996 A4 2.8 quattro auto AFC have Anti Theft?
Could any fuses cause the crank but no spark, no MIL (when ignition on) condition?
I have checked crank position and cam sensor, several grounds, looked for pinched (during trans install) wires.
Since I had disconnected the battery for several weeks, is it possible that an Anti Theft can do that?
Does a 1996 A4 2.8 quattro auto AFC have Anti Theft?
Could any fuses cause the crank but no spark, no MIL (when ignition on) condition?
I have checked crank position and cam sensor, several grounds, looked for pinched (during trans install) wires.