ENGINE PERFORMANCE – Porsche 911 Carrera 4 1999 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.4L

3.4L, Engine Performance Wiring Diagrams (1 of 3) for Porsche 911 Carrera 4 1999

List of elements for 3.4L, Engine Performance Wiring Diagrams (1 of 3) for Porsche 911 Carrera 4 1999:

64

• (left rear of engine) g114
• Aav valve
• Aegr sens
• Anti- lock brake system
• Automatic egr examin- ation connector
• Cooling fan st 1
• Cooling fan st 2
• Cooling fans system
• Cooling sw
• Ekp cutoff
• Eng sp sensor gnd
• Eng sp/tn sign
• Engine impulse
• Fuel injectors
• Fuel status
• Fuse b10 15a
• Fuse support b
• G110 (left front of eng)
• G119 (right front of eng)
• Gnd
• Gnd o2 sensors
• Hall sensor
• Hall sensor sign
• Ho2s (bef cat)
• Ho2s (beh cat)
• Ho2s 1 sign (bef cat)
• Ho2s 2 sign (bef cat)
• Hot in run or start
• Idle sp ewd-close
• Idle sp pos ewd-open
• Ign (start & run)
• Ign gnd
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Igntion coil 3
• Inj 1
• Inj 2
• Inj 3
• Inj 4
• Inj 5
• Inj 6
• Instrument cluster
• Intake temp
• Knock sensor 1
• Knock sensor 2
• Kva
• Main relay
• Malfunct ind lmp
• Malfunction ind lamp
• Measure sign (+)
• Mfi & di control unit (behind seatwell)
• Navigation system
• Nca
• Ntc eng compt temp
• Ntc engine air temperature environment sensor
• Nw2
• Second air pump
• Sensor ground
• Term 30
• Tv-sign

3.4L, Engine Performance Wiring Diagrams (2 of 3) for Porsche 911 Carrera 4 1999

List of elements for 3.4L, Engine Performance Wiring Diagrams (2 of 3) for Porsche 911 Carrera 4 1999:

24

• (on relay support 1) mfi-di relay
• (on relay support 2) ignition/ oxygen sensor relay
• (on relay support 2) secondary air pump relay
• Aav valve
• Bs 21/2
• Camshaft adjuster (left)
• Camshaft adjuster (right)
• Cooling fans system
• Differential pressure sensor
• Double ntc cooling water temp. motor sensor
• Fuse c1 25a
• Fuse c2 30a
• Fuse support c
• G117 (right rear of engine)
• Hot at all times
• Idle speed positioner
• Intake pipe change-over valve
• Mass air- flow sensor (near air cleaner housing)
• Nca
• Oil temperature & oil level sensor
• Secondary air blowing in valve
• Secondary air pump motor (left side of eng compt)
• Starting/charging system
• Throttle valve potentiometer (behind accelerator pedal)

3.4L, Engine Performance Wiring Diagrams (3 of 3) for Porsche 911 Carrera 4 1999

List of elements for 3.4L, Engine Performance Wiring Diagrams (3 of 3) for Porsche 911 Carrera 4 1999:

65

• "w" lead
• (in fuel tank) fuel pump
• (left side of dash)
• (on relay support 1) fuel pump relay
• 5-stf release
• A/c demand
• A/c system
• A/t
• Actuation start lock
• Alarm system/ central locking system control unit (under driver's seat)
• Anti-lock brake system
• Blower monitoring
• Can hi
• Can low
• Clutch interlock switch
• Compr on
• Cooling fans system
• Diagnosis connector (below left side of dash)
• Differential pressure
• Ekp relay
• Eng compt clean fan
• Eng sp sensor sign
• Engine speed sensor (in transmission)
• Eso rear
• Fuel consumption ind
• Fuse b8 15a
• Fuse c4 25a
• Fuse support b
• Fuse support c
• G114 (left rear of engine)
• G202
• G202 (left side of dash)
• Gnd
• Ho2s 1 (beh cat)
• Ho2s 2 (beh cat)
• Hot at all times
• Hot in start & run
• Ign (start & run)
• Ignition 2
• Instrument cluster system
• Intake pipe
• J/c (bs 12)
• J/c (bs 16/1)
• J/c (bs 21/1)
• Knock sensors gnd
• Lifting switch
• M/t
• Maxi fuse 40a
• Mfi & di control unit (behind seatwell)
• Mmi eng actual impul
• Nca
• Ntc water
• Nw1
• Oil temp
• Oxygen sensor 1 (downstream)
• Oxygen sensor 1 (upstream)
• Oxygen sensor 2 (downstream)
• Oxygen sensor 2 (upstream)
• Relay support
• Software voltage
• Starting/charging system
• Tank venting valve
• Tiptronic transmission control unit (behind right side emergency seat recess)
• Turn sign
• Ub switch