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Contents Wiring diagrams Section: Communication Devices All sections

Gateway: Other Porsche Cayenne I

Communication Devices 7 illustrations ~1633 words

General instructions/safety instructions

The following points must be observed during vehicle diagnosis

  1. After the battery is connected, volatile memories must be reprogrammed. In the case of radio coding and tuning, the customer must be informed of decoding and the deleted tuner memory.
  2. After troubleshooting or repairs, erase the fault memory with the Porsche System Tester II No. 9588 and carry out a test drive.
  3. After the test drive, read out the fault memory again with the Porsche System Tester II No. 9588.
WARNINGDanger of injury through triggering of driver's airbag Never hang the Porsche System Tester II No. 9588 over the steering wheel.
WARNINGDanger of injury and damage due to unusual vehicle handling when plugs or components are disconnected! Never disconnect plugs when the vehicle is in motion or drive the vehicle with plugs disconnected. Drive only with all parts fully installed and connected.
CAUTIONDanger of damage due to improper handling of batteries and control module plug connections! Never disconnect battery with engine running. Never start engine if battery terminal clamps are not connected securely. Never pull off or push on plug connections for the control modules or other electronic components when the ignition is switched on. Always disconnect the negative terminal of the battery and pull off all plug connections to the vehicle electrical system control module when carrying out welding work on the vehicle.

Note. The instrument cluster described in this 'Technical Manual, Diagnosis' is a system that actually comprises two components since the instrument cluster includes a so-called gateway, which 'mirrors' the CAN messages from various CAN bus systems (CAN comfort, CAN drive, CAN Infotainment) onto the required CAN. It is, so to speak, a galvanically separated interface between the CAN bus systems.

Fault code setting conditions

Fault codes can be set in various circumstances, e.g.

  1. battery disconnected
  2. plug connections disconnected
  3. faulty coding
  4. power failure
  5. etc.

In these circumstances, no fault is present in the system and the fault memory must be erased.

Possible causes of fault

Note. The 'possible causes of fault' that are responsible for the fault are listed here. Please note that in certain circumstances further faults can be stored in the fault memory after troubleshooting (e.g. if plugs are disconnected). After carrying out repairs, read out the fault memory of all control modules and erase any faults.

Fault type

The following fault types are possible

  1. no display
  2. upper limit value exceeded
  3. lower limit value not reached
  4. mechanical fault
  5. no signal/communication
  6. no or incorrect basic setting/adaptation
  7. short circuit to B+
  8. short circuit to ground
  9. implausible signal
  10. open circuit/short circuit to ground
  11. open circuit/short circuit to B+
  12. open circuit
  13. electrical fault in electric circuit
  14. please read out fault memory
  15. faulty
  16. cannot be checked now

Fault status

The following status types are possible

  1. present
  2. not present

This information should be saved using the Save key [F4] and printed out.

Note. Visual inspection: During troubleshooting, please check first that the affected pins on the instrument cluster plug connection are neither damaged nor corroded. The wiring and plugs of the affected components must also be checked for external damage and correct contacts. Repair damaged or corroded pins if possible, otherwise replace affected pins. Repair or replace damaged wires.

Note. Battery voltage and signals: A battery voltage of between 11.4 and 14.5 V is required for troubleshooting. This must be checked and provided if necessary. Both signals and voltages to components or fuses (input side) must be guaranteed on the vehicle electrical system.

Note. Specified resistance values are based on an ambient temperature of 20°C.

Tools

WARNINGDanger of injury while working with special tools Never hang the Porsche System Tester II No. 9588 over the steering wheel

Note. Plug contacts are optimally designed to suit the plug system. Operations on pins can cause contact problems. Always use suitable measurement tools, adapter plugs and test cables.

Required special tools, test and measuring equipment, plus auxiliary equipment

  1. ...!!!Commercially available battery charging device!!!...

Scheme 254

Scheme 254: Porsche System Tester II No. 9588
Scheme 254: Porsche System Tester II No. 9588

Scheme 255

Scheme 255: Commercially available digital multimeter
Scheme 255: Commercially available digital multimeter

Scheme 256

Scheme 256: Measurement tool set No. 9684
Scheme 256: Measurement tool set No. 9684

Scheme 257

Scheme 257: Component arrangement
Scheme 257: Component arrangement

Scheme 258

Scheme 258: Connector assignment
Scheme 258: Connector assignment

Wiring harness plug A, 32-pin instrument cluster/gateway

Scheme 259

Scheme 259: Wiring harness plug A, 32-pin instrument cluster/gateway
Scheme 259: Wiring harness plug A, 32-pin instrument cluster/gateway
PinDesignationPinDesignation
1Terminal 15SV2Terminal 15SV
3Speedometer output4Fuel level sensor 2
5Fuel level sensor 16Washer fluid level
7Sensor ground for outside temperature/coolant temperature/washer fluid level8Terminal 30
9Terminal 3110Oil pressure
11Outside temperature12Terminal 61
13 to 21Not used22Coolant level
23Terminal 3024Terminal 31
25K lead26 to 28Not used
29Brake fluid 'signal'30PSM OFF switch
31Not used32Not used

CONNECTOR PINS REFERENCE

Wiring harness plug B, 32-pin instrument cluster/gateway

Scheme 260

Scheme 260: Wiring harness plug B, 32-pin instrument cluster/gateway
Scheme 260: Wiring harness plug B, 32-pin instrument cluster/gateway
PinDesignationPinDesignation
1 to 6Not used7Brake pad wear indicator (BVA)
8CAN drive (high), External via diagnostic box9CAN drive (low), External via diagnostic box
10 to 12Not used13Parking brake
14 to 17Not used18Oil level sensor Senses both oil level and oil temperature
19CAN drive (high)20CAN drive (low)
21 to 26Not used27CAN comfort (high)
28CAN comfort (low)29 to 30Not used
31CAN Infotainment (high)32CAN Infotainment (low)

CONNECTOR PINS REFERENCE

Fault codeFault textFault effect
0455KESSY control module (CAN comfort)Limited functionality or no functions
0456KESSY control module (CAN drive)Limited functionality or no functions
0457Vehicle electrical system control module (CAN comfort)Limited functionality or no functions
0459PCM 2Limited functionality or no functions
0461Memory seat adjustment control module, passenger'sLimited functionality or no functions
0466Steering column switch (with electronic unit)Limited functionality or no functions
0469CAN Infotainment in single-wire operationLimited functionality or no functions
0470CAN comfort in single-wire operationLimited functionality or no functions
0478Air-conditioning system regulator control module, rearLimited functionality or no functions
0484Magnetic field sensor (compass control module)Limited functionality or no functions
0778Steering-angle sensorLimited functionality or no functions
0908Wiper motor (with control module)Limited functionality or no functions
1044Control module coded incorrectlyLimited functionality or no functions
1207Additional heating control moduleLimited functionality or no functions
1305CAN InfotainmentLimited functionality or no functions
1310Level control moduleLimited functionality or no functions
1312CAN driveLimited functionality or no functions
1314DME control moduleLimited functionality or no functions
1315Tiptronic control moduleLimited functionality or no functions
1316PSM control moduleLimited functionality or no functions
1320Air-conditioning system regulator control moduleLimited functionality or no functions
1321Airbag triggering unitLimited functionality or no functions
1325RDK control module (tyre pressure control system)Limited functionality or no functions
1327ParkAssist control moduleLimited functionality or no functions
1330Rear convenience system control moduleLimited functionality or no functions
1331Door control module, driver'sLimited functionality or no functions
1332Door control module, passenger'sLimited functionality or no functions
1333Door control module, rear leftLimited functionality or no functions
1334Door control module, rear rightLimited functionality or no functions
1335Memory seat adjustment control module, driver'sLimited functionality or no functions
1336CAN comfort OFFLimited functionality or no functions
1517Trailer hitch control moduleLimited functionality or no functions
2053Transfer box control moduleLimited functionality or no functions

GATEWAY FAULT OVERVIEW

Possible cause of fault

  1. Gateway faulty
  1. No signal/communication (no signal from KESSY control module on CAN comfort)

Affected pins

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from KESSY control module on CAN drive)

Instrument cluster, plug B

  1. Pin 19 'CAN drive (high)'
  2. Pin 20 'CAN drive (low)'
  1. No signal/communication (no signal from vehicle electrical system control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from PCM II control module on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. No signal/communication (no signal from passenger's memory seat adjustment control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from DSP control module on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. No signal/communication (no signal from telephone/telematics control module on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. No signal/communication (no signal from steering column switch on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from TV tuner control module on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. Open circuit in CAN Infotainment (high)
  2. Open circuit in CAN Infotainment (low)
  3. Electrical fault on CAN Infotainment

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. Open circuit in CAN comfort (high)
  2. Open circuit in CAN comfort (low)
  3. Electrical fault on CAN comfort

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from rear air-conditioning system regulator control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from magnetic field sensor on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'

Steering-angle sensor

Note. Whenever the battery terminal is disconnected, the steering-angle sensor must always be initialized 'control lamp in instrument cluster lights up'.

  1. No signal/communication (no signal from steering-angle sensor on CAN drive)
  2. Steering-angle sensor not initialized
  3. Steering-angle sensor faulty

Instrument cluster, plug B

  1. Pin 19 'CAN drive (high)'
  2. Pin 20 'CAN drive (low)'
  1. No signal/communication (no signal from wiper motor on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. Instrument cluster/gateway was replaced, but was not coded
  2. Instrument cluster/gateway was not coded correctly
  3. Incorrect parameter coding
  1. No signal/communication (no signal from additional heating control module on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. No signal/communication (no signal from PCM II control module on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. No signal/communication (no signal from telematics control module on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. No signal/communication (no signal from telephone transmitter and receiver on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. No signal/communication (no signal from radio on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. No signal/communication (no signals on CAN Infotainment)
  2. Faulty (CAN Infotainment wire faulty)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. No signal/communication (no signal from level control module on CAN drive)

Instrument cluster, plug B

  1. Pin 19 'drive (high)'
  2. Pin 20 'CAN drive (low)'
  1. No signal/communication (no signal on CAN Infotainment)

Instrument cluster, plug B

  1. Pin 31 'CAN Infotainment (high)'
  2. Pin 32 'CAN Infotainment (low)'
  1. Faulty (CAN drive wire faulty)

Instrument cluster, plug B

  1. Pin 19 'CAN drive (high)'
  2. Pin 20 'CAN drive (low)'
  1. No signal/communication (no signal from DME control module on CAN drive)

Instrument cluster, plug B

  1. Pin 19 'CAN drive (high)'
  2. Pin 20 'CAN drive (low)'
  1. No signal/communication (no signal from Tiptronic control module on CAN drive)

Instrument cluster, plug B

  1. Pin 19 'CAN drive (high)'
  2. Pin 20 'CAN drive (low)'
  1. No signal/communication (no signal from PSM control module on CAN drive)

Instrument cluster, plug B

  1. Pin 19 'CAN drive (high)'
  2. Pin 20 'CAN drive (low)'
  1. No signal/communication (no signal from air-conditioning system regulator control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from airbag triggering unit on CAN drive)

Instrument cluster, plug B

  1. Pin 19 'CAN drive (high)'
  2. Pin 20 'CAN drive (low)'
  1. No signal/communication (no signal from RDK control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from ParkAssist control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from rear convenience system control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from driver's door control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from passenger's door control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from rear left door control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from rear right door control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from driver's memory seat adjustment control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signals on CAN comfort)
  2. Faulty (CAN comfort wire faulty)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from trailer hitch control module on CAN comfort)

Instrument cluster, plug B

  1. Pin 27 'CAN comfort (high)'
  2. Pin 28 'CAN comfort (low)'
  1. No signal/communication (no signal from transfer box control module on CAN drive)

Instrument cluster, plug B

  1. Pin 19 'CAN drive (high)'
  2. Pin 20 'CAN drive (low)'
  1. No signal/communication (no signal from transverse lock control module on CAN drive)

Instrument cluster, plug B

  1. Pin 19 'CAN drive (high)'
  2. Pin 20 'CAN drive (low)'

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