Tiptronic System G50
P1765Throttle valve information error
Function
The ECM signals a fault directly to the Tiptronic control module via a data lead (CAN bus).
Diagnosis condition
- Engine speed > 400 rpm (refer to ECM test plan P0122/P0123)
Wiring diagram
Diagnosis procedure
NOTE: The throttle plate angle can be checked with the Porsche System Tester 2 (Actual values/Throttle plate angle).
1 Check data lead from Tiptronic control module to ECM for continuity.
1. Pull off Tiptronic control module connector.
2. Pull off ECM connector.
3. Connect ohmmeter to Tiptronic control module connector pin 85 and ECM connector pin 85 (or pin 86 and pin 86).
Display: 0 ... 5 Ohms
If Infinite Ohms is displayed, check wiring harness for chafing and pinching damage.
1 Check data lead from Tiptronic control module to ECM for short circuit to ground.
1. Connect ohmmeter to Tiptronic control module connector pin 85 (or pin 86) and ground.
Display: Infinite Ohms
If 0 ... 5 Ohms is displayed, check wiring harness for chafing and pinching damage.
1 Check data lead from Tiptronic control module to ECM for short circuit to B+.
1. Switch on ignition.
2. Connect voltmeter to Tiptronic control module connector pin 85 (or pin 86) and ground.
Display: 0 Volt
If battery positive voltage is displayed, check wiring harness for chafing and pinching damage.