- with Porsche System Tester
The fuel pump can be actuated with the Porsche System Tester 2 or by jumpering the fuel pump relay.
or
- via fuel pump relay without tester
Disconnect the fuel pump relay from the central electrical system and jumper plug-in contacts 30 and 87 (identification 3 and 5 on central
electrical system) with a fused shop-made cable. The fuel pump must now operate or deliver fuel.
4. Nominal test values
Stationary engine 3.8 锟斤拷 0.2 bar
Engine idling 3.3 锟斤拷 0.2 bar
NOTE: The seal or sealing ring in the brass closure cap is not exchangeable. It must therefore be used only once.
Tightening torque of new brass closure cap 2.5 锟斤拷 0.5 Nm (2.0 锟斤拷 0.5 ftlb.).
3 Check fuel pressure regulator, vacuum connection and fuel return line.
1. Remove vacuum hose from fuel pressure regulator.
2. Connect special tool 9103/2 to vacuum hose.
3. Start the engine.
Display: 0.4 - 0.6 bar
If the value is not attained, check the intake air system for leaks and check vacuum line to fuel pressure regulator for restrictions.
4. Check housing of fuel pressure regulator for damage and deformation.
Replace the fuel pressure regulator if it is damaged with the result that the spring pre-tensioning is increased.
4 Check EVAP canister purge valve.
1. Disconnect hose from EVAP canister purge valve to intake system at EVAP canister purge valve.
2. Remove connector of EVAP canister purge valve.
3. Connect special tool 9160/1 to EVAP canister purge valve.
4. Generate vacuum of approx. 0.7 bar.
The vacuum must not fall below 0.5 bar after 10 minutes.
Oxygen Sensing Adaptation, Upper Load Range, Bank 1 - Above Limit
P1132
357 Oxygen Sensing Adaptation, Upper Load Range, Bank 1 - Above Limit
Diagnosis conditions
- Oxygen sensing system active
- Time elapsed after engine start-up: 250 to 350 seconds (USA)
- Time elapsed after engine start-up: 302 to 402 seconds (RoW)
- Engine temperature greater than 60 锟斤拷C
- Mass air flow greater than 180 kg/h
Possible fault cause
- Incorrect signal from MAF sensor
- Intake air system leaking
- Fuel pressure too low
- Volume supply of fuel pump too low
- Fuel injectors fouled
Diagnosis/troubleshooting
- Air leaks ahead of the oxygen sensors can lead to a fault in adaptation. See Check exhaust system for leaks.
- For vehicles in the USA, the upper load range will probably not be reached. The only case in which a fault could be stored is during driving
while towing a trailer or caravan on a hill.
- If the fuel tank reserve light is switched on, no fault is entered.