Troubleshooting procedure
Troubleshooting can only be performed when the fault is present. In other words, specific troubleshooting can only be performed in accordance with instructions (given under Diagnosis/troubleshooting for each fault code) if the entry has the status 'present' in the fault memory.
If the fault is currently 'not present', please check the following
- Diagnosis conditions are met; if necessary perform a short test or test drive
- All plug connections and ground points of the affected current path are OK.
- Set all wiring harnesses of the affected current path to a state that corresponds to driving by pulling and shaking them (loose contact)
Diagnostic conditions
Note. Important! Always connect a suitable battery charging device to the vehicle electrical system battery or to the designated jump-start terminal before starting diagnosis. All unnecessary loads must also be switched off.
Note. The fault can only be identified if the requirements listed under 'Diagnostic conditions' are met. For this reason, the specified procedure must be observed after a fault is repaired: Erase fault memory. Satisfy the requirements listed under 'Diagnostic conditions'. Read out fault memory again
Diagnosis/troubleshooting
Note. The fault memory Info key [F8] on Porsche System Tester II No. 9588 can be used to access the 'extended fault memory'. The following information can be displayed
Troubleshooting with no control module connected
Note. The 9588 Porsche System Tester II and the 'off-road stabilizer control module' are not connected.
- Ignition on
- The fuses of the 'off-road stabilizer control module' are OK
- The fuses of the 'gateway' in the instrument cluster are OK
- Battery voltage is OK
- Plug on 'off-road stabilizer control module' attached correctly
16-pin diagnostic box in driver's footwell
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| 1 | Terminal 15 | 9 | Not used |
| 2 | Not used | 10 | Not used |
| 3 | K' lead (communication with Tester) | 11 | Not used |
| 4 | Ground | 12 | Not used |
| 5 | Ground | 13 | Not used |
| 6 | CAN high diagnosis (instrument cluster) | 14 | CAN low diagnosis (instrument cluster) |
| 7 | K lead | 15 | Not used |
| 8 | Not used | 16 | Terminal 30 |
CONNECTOR PINOUTS REFERENCE
Scheme 95
Note. Visual inspection: In the next troubleshooting section, please check first that the affected 'pins' on the plug connections are neither damaged nor corroded. Remove any soiling or corrosion/oxidation and replace damaged parts/wires.
Note. Control unit replacement: Before replacing a control module, the ground connections, power supply and plug connections on the control module must be checked. After the test drive, read out the fault memory again with the 9588 Porsche System Tester II. Additional causes of faults that could damage the control module should be detected and remedied.
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check 9588 Porsche System Tester II connections | Check that the data link connector 9588 Porsche System Tester II is connected correctly to the diagnostic box in the vehicle. Check 9588 Porsche System Tester II connection cable for damage. Check function of 9588 Porsche System Tester II on another vehicle, if necessary. | Go to Step 2 | Repair 9588 Porsche System Tester II. --> End |
| 2 | Check fuses and adjacent voltage in fuse carrier at left of dashboard | Terminal 30 power supply 'fuse F23' Terminal 15 voltage 'fuse F49' | 11.4 ... 14.5 V Go to Step 3 | Replace any faulty fuse(s) (before doing so, check that the correct fuse was used). If the fuses are intact but there is no voltage, check the wires and repair them if necessary. If the wires are intact, check the fuse box and replace it if faulty. --> End |
| 3 | Check terminal 30 power supply to 'ORS control module' | Switch off the ignition. Pull plug off the 'ORS control module'. Measure voltage between plug B 'pin 22' and ground. | 11.4 ... 14.5 V Go to Step 4 | Repair terminal 30 power supply to 'ORS control module'. --> End |
| 4 | Check terminal 15 power supply to 'ORS control module' | Switch off ignition. Pull plug off ORS control module. Switch on ignition. Measure voltage between plug B 'pin 7' and ground. | 11.4 ... 14.5 V Go to Step 5 | Repair terminal 15 power supply to 'ORS control module'. --> End |
| 5 | Check terminal 31 ground supply to ORS control module for open circuit | Switch off ignition. Measure resistance between 'pin 23' and ground. | < 5 ohms Go to Step 6 | Between ORS control module and 'body ground point 41': Open circuit, contact resistance/corroded or loose connection at 'body ground point 41'. Repair wire or fasten it to ground pin. --> End |
| 6 | Check 'K' lead' for short circuit to B+ | Switch on ignition. Measure voltage between 'pin 3' of K' lead on diagnostic box in the vehicle and ground. | < 0.3 V Go to Step 7 | Repair K' lead. --> End |
| 7 | Check 'K' lead' for short circuit to ground | Switch off ignition. Measure resistance between 'pin 3' of K' lead on diagnostic box in the vehicle and ground. | Infinity ohms Go to Step 8 | Repair K' lead. --> End |
| 8 | Check 'K' lead' for open circuit | Measure resistance of K' lead from diagnostic box in the vehicle 'pin 3' to plug A on instrument cluster gateway 'pin 25'. | < 0.5 ohms Go to Step 9 | Repair K' lead. --> End |
| 9 | Check gateway in instrument cluster using the 9588 Porsche System Tester II | Gateway in instrument cluster is OK if: it is possible to connect to at least one control module connected to the instrument cluster gateway. | Go to Step 10 | Replace instrument cluster. --> End |
| 10 | CAN drive, check connection to 'ORS control module' | Follow ' CHECKING INSTRUCTIONS/CAN DATA BUS '. | If CAN check is OK: Go to Step 11 | |
| 11 | Replace ORS control module | Read note on replacing control units before replacing a control module! --> End | ||
TROUBLESHOOTING CHART
- Ignition on
- Internal offroad stabilizer control module function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Renew offroad stabilizer control module | > End | |
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal offroad stabilizer control module function test
Note. If there is no incoming signal via the CAN drive using several control modules, the CAN drive must be checked for open or short circuits. Refer to ' CHECKING INSTRUCTIONS/CAN DATA BUS '.
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in KESSY control module | Go to Step 2 | Identify fault and read out fault memory again in ORS control module if O.K. --> End, if not O.K. Go to Step 2 |
| 2 | Continue troubleshooting, Refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | > End | Go to Step 3 |
| 3 | Renew offroad stabilizer control module | > End | |
DIAGNOSIS/TROUBLESHOOTING CHART
- Internal offroad stabilizer control module function test
- Ignition off
Note. Visual inspection: In the next troubleshooting section, please check first that the affected pins on the ORS control module 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. Sporadic faults: In the event of faults that occur sporadically, the wiring positions that are linked to moving parts on and in the vehicle must be checked for each system. Various statuses that can cause faults must be simulated with the help of the wiring diagram.
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Read out fault memory in KESSY control module | Go to Step 2 | Identify fault and read out fault memory again in ORS control module if O.K. --> End, if not O.K. Go to Step 2 | |
| 2 | Check fuse | Switch off ignition Remove fuse 'F49' (5A) from fuse carrier at left of dashboard and check it for continuity | Go to Step 4 | Go to Step 3 |
| 3 | Replace fuse | If fault is no longer present (fuse not faulty), see note on 'Sporadic faults' under Diagnosis/troubleshooting . --> End | Fault still present (fuse faulty again) Go to Step 7 | |
| 4 | Check voltage of relay output wire | Switch on ignition Measure voltage with relay for terminal 15 connected at relay socket between 'pin 5' and ground | Voltage is 11.4 to 14.5 V Go to Step 7 | Go to Step 5 |
| 5 | Check voltage of relay input wire | Switch on ignition Measure voltage with relay for terminal 15 connected at relay socket between 'pin 3' and ground | Voltage is 11.4 to 14.5 V Go to Step 7 | Go to Step 6 |
| 6 | Check wire from fuse to relay for open circuit | Switch off ignition Pull off relay for terminal 15 Remove fuse 'F49 '(5A) from fuse carrier at left of dashboard Measure resistance between relay socket for terminal 15 relay, 'pin 3' and fuse output from fuse 'F49' in the direction of the relay | < 5 ohms Repair or replace wiring harness or components near fuse 'on input side' --> End | Repair line --> End |
| 7 | Check relay for terminal 15 | Check function of terminal 15 relay and replace relay, if necessary, in order to check it out | 'Old' relay for terminal 15 was faulty Go to Step 8 | Leave 'new' relay for terminal 15 inserted and Go to Step 9 |
| 8 | Replace relay for terminal 15 | > End | ||
| 9 | Continue troubleshooting, Refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | > End | ||
| 10 | Renew offroad stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal function test on off-road stabilizer (ORS) control module
| CAUTION | Always observe the applicable regulations when working with hydraulic fluid. |
| CAUTION | Depressurise the hydraulic system before working on it. |
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check for leaks in hydraulic unit and hydraulic lines | Go to Step 2 | Repair leaks --> End | |
| 2 | Check hydraulic motor for sluggishness | Using the 9588 Porsche System Tester II, select the 'Actual values' menu item in the 'Off-road stabilizers' system. Read out the 'motor current' there, while disengaging the off-road stabilizers using the button on the centre console. | 110 bar => 12...14 A 150 bar => l5...19 A 180 bar => 20...24 A Go to Step 3 | > 24A If the hydraulic fluid temperature is low, increase it to a higher temperature (approx. 20°C), or replace hydraulic unit. --> End |
| 3 | Replace off-road stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal offroad stabilizer control module function test
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check input voltage at fuse | Switch on ignition Measure voltage between fuse 'F23' (10A) 'on input side' in fuse carrier at left of dashboard and ground | Voltage is 11.4 to 14.5 V Go to Step 2 | Repair or replace wiring harness or components near fuse 'on input side' --> End |
| 2 | Check fuse | Check 2a Switch off ignition Remove fuse 'F23' (10A) from fuse carrier at left of dashboard and check it for continuity | Go to Step 4 | Go to Step 3 |
| Check 2b: Reconnect intact fuse 'F23' (10A) Measure voltage at fuse output 'F23' and measure ground | Voltage is 11.4 to 14.5 V Go to Step 4 | Go to Step 3 | ||
| 3 | Replace fuse | Fault is no longer present (fuse not faulty) --> End | Fault still present (fuse faulty again) Go to Step 5 | |
| 4 | Check the battery or alternator. | Go to Step 6 | Charge or replace battery Otherwise, repair alternator --> End | |
| 5 | Inspect the wiring harness from 'F23 fuse output 'to the offroad stabilizer control module 'Pin 22' for pinches and chafing damage | No damage visible Go to Step 7 | Repair wiring harness --> End | |
| 6 | Check the ground points and the plug connection on the offroad stabilizer control module for corrosion | No corrosion visible Go to Step 7 | Remove and repair corrosion properly or replace various components --> End | |
| 7 | Renew offroad stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Internal function test on off-road stabilizer (ORS) control module
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Code the control module (write valid coding), refer to CODING THE CONTROL UNIT FOR OFF-ROAD STABILIZER ; 40 24 19 REMOVING AND INSTALLING CONTROL UNIT FOR OFF-ROAD STABILIZER - AS OF MY 2003 (ALL MODELS) | > End | Go to Step 2 |
| 2 | Replace off-road stabilizer control module | > End | |
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal offroad stabilizer control module function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Continue troubleshooting, Refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | > End | |
| 2 | Renew offroad stabilizer control module | > End | |
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal offroad stabilizer control module function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out PSM control module fault memory | Go to Step 2 | Identify fault and read out fault memory again in ORS control module if O.K. --> End if not OK Go to Step 3 |
| 2 | Continue troubleshooting, Refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | > End | |
| 3 | Renew offroad stabilizer control module | > End | |
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal offroad stabilizer control module function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in transfer box control module | Go to Step 2 | Identify fault and read out fault memory again in ORS control module if O.K. --> End if not OK Go to Step 3 |
| 2 | Continue troubleshooting, Refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | > End | |
| 3 | Renew offroad stabilizer control module | > End | |
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal function test on offroad stabilizer (ORS) control unit
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check wiring between front-axle sensor and ORS control unit for short circuit to B+ | Switch off ignition Disconnect connector on front-axle sensor Disconnect connector B on ORS control unit Switch on ignition Measure voltage between connector B on ORS control unit 'pins 2, 9' and ground | < 0.3 V Go to Step 2 | Repair wire harness --> End |
| 2 | Check wiring between front-axle sensor and ORS control unit for short circuit to ground | Switch off ignition Measure resistance between connector B on ORS control unit 'pins 2, 9' and ground | Infinity ohms Go to Step 3 | Repair wire harness --> End |
| 3 | Check wiring between front-axle sensor and ORS control unit for open circuit | Switch off ignition Measure resistance between connector B on ORS control unit 'pins 2, 9' and front-axle sensor 'pins 1, 2' | < 5 ohms Go to Step 4 | Repair wire harness --> End |
| 4 | Check front-axle sensor | Using the 9588 Porsche System Tester II, select the menu item 'Actual values' and read out the 'front-axle sensor voltage' in uncoupled and coupled position. | Uncoupled: 1.28...1.92 V, Coupled: 0.2...0.6 V Go to Step 5 | Replace front-axle sensor --> End |
| 5 | Replace offroad stabilizer control unit | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal function test on offroad stabilizer (ORS) control unit
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check wiring between rear-axle sensor and ORS control unit for short circuit to B+ | Switch off ignition Disconnect connector from rear-axle sensor Disconnect connector B on ORS control unit Switch on ignition Measure voltage between connector B on ORS control unit 'pins 4, 8' and ground | < 0.3 V Go to Step 2 | Repair wire harness --> End |
| 2 | Check wiring between rear-axle sensor and ORS control unit for short circuit to ground | Switch off ignition Measure resistance between connector B on ORS control unit 'pins 4, 8' and ground | Infinity ohms Go to Step 3 | Repair wire harness --> End |
| 3 | Check wiring between rear-axle sensor and ORS control unit for open circuit | Switch off ignition Measure resistance between connector B on ORS control unit 'pins 4, 8' and rear-axle sensor 'pins 1, 2' | < 5 ohms Go to Step 4 | Repair wire harness --> End |
| 4 | Check rear-axle sensor | Using the 9588 Porsche System Tester II, select the menu item 'Actual values' and read out the 'rear-axle sensor voltage' in uncoupled and coupled position | Uncoupled: 1.28...1.92 V, Coupled: 0.2...0.6 V Go to Step 5 | Replace rear-axle sensor --> End |
| 5 | Replace offroad stabilizer control unit | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal function test on off-road stabilizer (ORS) control module
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check wires between pressure sensor and ORS control module for short circuit to B+ | Switch off ignition. Disconnect plug B on hydraulic unit. Disconnect plug B on the ORS control module. Switch on ignition. Measure voltage between plug B on hydraulic unit 'pins 3, 7, 10' and ground. | < 0.3 V Go to Step 2 | Repair wiring harness. --> End |
| 2 | Check wires between pressure sensor and ORS control module for short circuit to ground | Switch off ignition. Measure resistance between plug B on hydraulic unit 'pins 3, 7, 10' and ground. | Infinity ohms Go to Step 3 | Repair wiring harness. --> End |
| 3 | Check wires between pressure sensor and ORS control module for open circuit | Switch off ignition. Measure resistance between plug B on hydraulic unit 'pins 3, 7, 10' and plug B on ORS control module 'pins 18, 11, 10'. | < 5 ohms Go to Step 4 | Repair wiring harness. --> End |
| 4 | Check pressure sensor | Push plugs back onto the hydraulic unit and ORS control module. Switch on ignition. Measure voltage on plug B 'pin 11' of ORS control module (back of plug) and ground. | 0.5 - 4.5 V, depending on the pressure in the hydraulic unit (0 - 250 bar). See ' VOLTAGE RANGE ' table. Go to Step 5 | If the voltage is 5 V, the pressure sensor is faulty and must be replaced. --> End |
| 5 | Replace off-road stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal function test on off-road stabilizer (ORS) control module
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check ORS button | Using the 9588 Porsche System Tester II, select the 'Input signals' menu item in the 'Off-road stabilizers' system. Read out the 'ORS button status' there. | When actuating the button: '0' for Off '1' for On Go to Step 2 | Replace button. --> End |
| 2 | Check wires between ORS button and ORS control module for short circuit to B+ | Switch off ignition. Pull plug A off the running gear switch module. Disconnect plug B on the ORS control module. Switch on ignition. Measure voltage between plug A of the running gear switch module 'pin 5' and ground. | < 0.3 V Go to Step 2 | Repair wiring harness. --> End |
| 3 | Check wires between ORS button and ORS control module for short circuit to ground | Switch off ignition. Measure resistance between plug A of the running gear switch module 'pin 5' and ground. | Infinity ohms Go to Step 3 | Repair wiring harness. --> End |
| 4 | Check wires between ORS button and ORS control module for open circuit | Switch off ignition. Measure resistance between plug A 'pin 5' of running gear switch module and plug B 'pin 13' of ORS control module. | < 5 ohms Go to Step 4 | Repair wiring harness. --> End |
| 5 | Replace ORS button | > End | Go to Step 6 | |
| 6 | Replace off-road stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal function test on off-road stabillizer (ORS) control module
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check wires between LED in button and ORS control module for short circuit to B+ | Switch off ignition. Pull plug A off the running gear switch module. Pull plug B off the ORS control module. Switch on ignition. Measure voltage between plug A of the running gear switch module 'pin 5' and ground. | < 0.3 V Go to Step 2 | Repair wiring harness. --> End |
| 2 | Check wires between LED in button and ORS control module for short circuit to ground | Switch off ignition. Measure resistance between plug A of the running gear switch module 'pin 5' and ground. | Infinity ohms Go to Step 3 | Repair wiring harness. --> End |
| 3 | Check wires between LED in button and ORS control module for open circuit | Switch off ignition. Measure resistance between plug A 'pin 5' of running gear switch module and plug B 'pin 13' of ORS control module. | < 5 ohms Go to Step 4 | Repair wiring harness. --> End |
| 4 | Replace ORS button | > End | Go to Step 5 | |
| 5 | Replace off-road stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal offroad stabilizer control module function test
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check wires between VA valve on the hydraulic unit and ORS control module for short circuit to B+ | Switch off ignition Disconnect plug A from the hydraulic unit Disconnect plug B from ORS control module Switch on ignition Measure voltage between plug B on hydraulic unit 'Pin 5, 6' and ground | < 0.3 V Go to Step 2 | Repair wiring harness --> End |
| 2 | Check wires between VA valve on the hydraulic unit and ORS control module for short circuit to ground | Switch off ignition Measure resistance between plug A on hydraulic unit 'Pin 5, 6' and ground | Infinity ohms Go to Step 3 | Repair wiring harness --> End |
| 3 | Check wires between VA valve on the hydraulic unit and ORS control module for disconnection | Switch off ignition Measure resistance between plug A on hydraulic unit 'Pin 5, 6' and plug B on ORS control module 'Pin 20, 17' | < 5 ohms Go to Step 4 | Repair wiring harness. --> End |
| 4 | Check VA valve | Reconnect plug to hydraulic unit and ORS control module Switch on ignition Uncouple offroad stabilizers (activate button, LED permanently on) measure the voltage in the ORS control module plug B (back of plug) during the switching procedure 'Pin 17' and 'Pin 20' | 11.4...14.5V Go to Step 5 | Replace hydraulic unit --> End |
| 5 | Renew offroad stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal offroad stabilizer control module function test
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check wires between HA valve on the hydraulic unit and ORS control module for short circuit to B+ | Switch off ignition Disconnect plug A from the hydraulic unit Disconnect plug B from ORS control module Switch on ignition Measure voltage between plug B on hydraulic unit 'Pin 1, 2' and ground | < 0.3 V Go to Step 2 | Repair wiring harness --> End |
| 2 | Check wires between HA valve on the hydraulic unit and ORS control module for short circuit to ground | Switch off ignition Measure resistance between plug A on hydraulic unit 'Pin 1, 2' and ground | Infinity ohms Go to Step 3 | Repair wiring harness --> End |
| 3 | Check wires between HA valve on the hydraulic unit and ORS control module for disconnection | Switch off ignition Measure resistance between plug A on hydraulic unit 'Pin 1, 2' and plug B on ORS control module 'Pin 19, 16' | < 5 ohms Go to Step 4 | Repair wiring harness. --> End |
| 4 | Check HA valve | Reconnect plug to hydraulic unit and ORS control module Switch on ignition Uncouple offroad stabilizers (activate button, LED permanently on) measure the voltage in the ORS control module plug B (back of plug) during the switching procedure 'Pin 16' and 'Pin 19' | 11.4...14.5V Go to Step 5 | Replace hydraulic unit --> End |
| 5 | Renew offroad stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal offroad stabilizer control module function test
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check wires between el. hydraulic pump on the hydraulic unit and ORS control module for short circuit to ground | Switch off ignition Measure resistance between plug A on hydraulic unit 'Pin 3' and ground | Infinity ohms Go to Step 2 | Repair wiring harness --> End |
| 2 | Check wires between el. hydraulic pump on the hydraulic unit and ORS control module for disconnection | Switch off ignition Measure resistance between hydraulic unit plug A 'Pin 3' and ORS control module plug A 'Pin 2' | < 5 ohms Go to Step 3 | Repair wiring harness. --> End |
| 3 | Check el. hydraulic pump | Reconnect plug to hydraulic unit and ORS control module Switch on ignition Uncouple offroad stabilizers (activate button, LED permanently on) or use the Porsche System Tester II No. 9588 in the menu item 'actuator test' to select the subpoint 'switch on motor' and switch on the hydraulic pump measure the voltage in the ORS control module plug B (back of plug) during the switching procedure 'Pin 16' and 'Pin 19' | 11.4...14.5V Go to Step 4 | Replace hydraulic unit --> End |
| 4 | Renew offroad stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
- Ignition on
- Internal function test on off-road stabilizer (ORS) control module
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check fuse | Disengage off-road stabilizers (actuate button, LED lights up continuously). During the switching operation, measure voltage on both sides of the fuse 'F14' in the current distributor and ground. | 11.4 - 14.5 V Go to Step 2 | Correct faults and replace fuse in current distributor 'F14'. --> End |
| 2 | Check wires between fuse 'F14' in current distributor and ORS control module for open circuit | Disengage off-road stabilizers (actuate button, LED lights up continuously). During the switching operation, measure voltage on ORS control module, plug A 'pin 1' and ground. | 11.4 - 14.5 V Go to Step 3 | Repair wiring harness. --> End |
| 3 | Check wire between electric hydraulic pump and ORS control module for open circuit | Disengage off-road stabilizers (actuate button, LED lights up continuously). During the switching operation, measure voltage on the hydraulic unit, plug A 'pin 3' and ground. | 11.4 - 14.5 V Go to Step 4 | Repair wiring harness. --> End |
| 4 | Replace off-road stabilizer control module | > End | ||
DIAGNOSIS/TROUBLESHOOTING CHART
Poses Online