strong hesitation
#1
12-23-2010 | 04:52 AM
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Joined: Jun 2005
Posts: 338
Rep Power: 35
strong hesitation
i was faced with some strong hesitation yesterday when i took the car out for a ride, the hesitation comes when i accelerate fast, anyway i went back home and connected my durametric and this fault code came up:
P1241 Porsche Fault Code 154 - Injector Valve Cylinder 3 Open Circuit.
Any Ideas??
P1241 Porsche Fault Code 154 - Injector Valve Cylinder 3 Open Circuit.
Any Ideas??
#3
12-23-2010 | 09:23 AM
Open circuit means usually a wiring harness is loose or disconnected....
thats as far as I can say...
markski
thats as far as I can say...
markski
__________________
2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
#4
12-23-2010 | 10:20 AM
Registered User
Joined: May 2010
Posts: 1,516
From: Scotland
Rep Power: 98
Frank
P1241
154 Fuel injector, cylinder 3 - open circuit
Diagnosis conditions
•
Engine running
•
Battery voltage greater than 7 V
Possible fault cause
♦
Fuel injector (coil) open circuit
♦
Open circuit in wiring
♦
DME control module
Affected terminals
Terminal III/15
Open circuit causes the fuel injector to be continually closed.
Diagnosis/troubleshooting
Note!
Work instruction Display OK If not OK
Work instruction Display OK If not OK
1 Check fuel injector
♦ Remove connector of fuel injector
3
3
♦
Connect special tool V.A.G.
1315 A/1
1315 A/1
♦
Measure resistance at special
tool V.A.G. 1315 A/1
11 - 13 Ω
tool V.A.G. 1315 A/1
11 - 13 Ω
(at 20 °C)
⇒
Step 2
Replace fuel injector
Replace fuel injector
→
End
2 Check wiring harness for
open circuit
2 Check wiring harness for
open circuit
♦
Connect special tool 9637 to
wiring harness (DME control
module plug)
wiring harness (DME control
module plug)
♦
Remove connector of fuel injector
Repair wiring harness
Repair wiring harness
→
End
♦
Measure resistance between
special tool 9637 Pin III/15 and
fuel injector plug Pin 2
0 - 5 Ω
⇒ Step 3
special tool 9637 Pin III/15 and
fuel injector plug Pin 2
0 - 5 Ω
⇒ Step 3
3 Replace DME control module
⇒ Step 4
4 Perform adaptation ♦ Switch on the ignition
4 Perform adaptation ♦ Switch on the ignition
♦
Wait one minute
♦
Do not press the accelerator
♦
Switch off the ignition for at
least 10 seconds
least 10 seconds
♦
Read out the fault memory
→
End
Work instruction Display OK If not OK
Hope that helps a little.
Frank
Hope that helps a little.
Frank
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