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 9588 Porsche System Tester II can be used to access the 'extended fault memory'. The following information can be displayed
Note. The auxiliary heater control module is locked if the same fault has happened 3 times or 5 different faults have happened in succession.
- Ignition on
- Internal auxiliary heater control unit function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Battery positive voltage 9.76 V - 15 V
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 3 | Work through faults --> End |
| 3 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Fuel supply warning light on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 3 | Work through faults --> End |
| 3 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 3 | Work through faults --> End |
| 3 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Engine on
- Internal auxiliary heater control unit function test
| WARNING | Danger of accident due to moving parts when working in engine compartment |
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
Note. Battery voltage: A battery voltage of between 11.4 and 14.5 V is required for the following troubleshooting procedure. This must be checked and provided, if necessary. On the vehicle electrical system, the voltage to the fuse (input side) must be guaranteed.
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Measure charge voltage/current on three-phase generator | Engine speed > 2,000 rpm. Measure charge voltage/current of generator. | 11.4 to 14.5 V Go to Step 2 | Wiring/regulator or diodes faulty. Repair wires or generator. --> End |
| 2 | Replace auxiliary heater | > End | ||
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 3 | Work through faults --> End |
| 3 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End | |
| 2 | Check wire in vehicle between auxiliary heater control unit and 3/2-way valve plug for open circuit | Switch off ignition Pull off plug A from auxiliary heater control unit Pull off plug of 3/2-way valve Measure resistance between pin 4 of plug A on auxiliary heater control unit and pin 1 on plug of 3/2-way valve | < 5 ohms Go to Step 3 | Repair wire or replace wiring harness --> End |
| 3 | Check wire in vehicle between auxiliary heater control unit and 3/2-way valve for short circuit to ground | Measure resistance between pin 1 on plug for 3/2-way valve and ground | Infinity ohms Go to Step 4 | Repair wire or replace wiring harness --> End |
| 4 | Check wire in vehicle between auxiliary heater control unit and 3/2-way valve for short circuit to B+ | Push on plug A of auxiliary heater control unit Switch on ignition Measure voltage between pin 1 on plug for 3/2-way valve and ground | < 0.3 V Go to Step 5 | Repair wire or replace wiring harness --> End |
| 5 | Check ground leads | Measure resistance between pin 2 on plug for 3/2-way valve and vehicle ground | < 5 ohms Go to Step 6 | Repair wire or replace wiring harness --> End |
| 6 | Replace auxiliary heater | > End | ||
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. If there is no incoming signal/message via the CAN Infotainment using several control modules, the CAN Infotainment 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 gateway control module | Go to Step 2 | Work through faults --> End |
| 2 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 3 | Work through faults --> End |
| 3 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 3 | Work through faults --> End |
| 3 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. If there is no incoming signal/message via the CAN Infotainment using several control modules, the CAN Infotainment 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 air-conditioning system regulator control module | Go to Step 2 | Work through faults --> End |
| 2 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 3 | Work through faults --> End |
| 3 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin connector on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wiring.
| CAUTION | Danger! Danger of fire due to leaking fuel. |
Note. The fuel supply of the auxiliary heater or metering pump must be ensured.
Note. Coolant temperature must be < 60 °C (140 °F) before the test!
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Erase fault memory in auxiliary heater control unit | Go to Step 2 | Go to Step 3 |
| 2 | Start up auxiliary heater | > End | Go to Step 3 |
| 3 | Perform 'drive link test' using 9718 PIWIS Tester | Go to Step 4 | |
| 4 | Erase fault memory in auxiliary heater control unit | > End | Go to Step 5 |
| 5 | Read out fault memory in auxiliary heater control unit | > End | Go to Step 6 |
| 6 | Work through faults | > End | Go to Step 7 |
| 7 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin connector on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wiring.
| CAUTION | Danger! Danger of fire due to leaking fuel. |
Note. The fuel supply of the auxiliary heater or metering pump must be ensured.
Note. Coolant temperature must be < 60 °C (140 °F) before the test!
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Erase fault memory in auxiliary heater control unit | Go to Step 2 | Go to Step 3 |
| 2 | Start up auxiliary heater | > End | Go to Step 3 |
| 3 | Perform 'drive link test' using 9718 PIWIS Tester | Go to Step 4 | |
| 4 | Erase fault memory in auxiliary heater control unit | > End | Go to Step 5 |
| 5 | Read out fault memory in auxiliary heater control unit | > End | Go to Step 6 |
| 6 | Work through faults | > End | Go to Step 7 |
| 7 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: In the next troubleshooting section, please check first that the affected fuses are not faulty. Replace faulty fuse(s) and determine and remedy the cause according to troubleshooting instructions. The affected 'pins' on the auxiliary heater control unit plug connection must be neither damaged nor corroded. The wiring of the affected components must also be checked for external damage. Repair damaged or corroded 'pins' if possible, otherwise replace affected 'pins'. Repair damaged wire or replace.
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Measure charge voltage/current on three-phase generator | Engine speed > 2,000 rpm. Measure charge voltage/current of generator. | 11.4 to 14.5 V Go to Step 2 | Wiring/regulator or diodes faulty. Repair wires or generator. --> End |
| 2 | Check terminal 30 power supply to auxiliary heater control unit | Switch off the ignition. Disconnect plug on auxiliary heater control unit. Measure voltage between 'pin 1 and ground'. | 11.4 to 14.5 V Go to Step 3 | Check whether fuses are faulty, check power supply lines for short circuit to ground: Go to Step 4 |
| 3 | Check terminal 31 ground to auxiliary heater control unit | Measure voltage between 'pin 2 and battery positive'. | 11.4 to 14.5 V Go to Step 4 | Check ground lead for short circuit to B+: Go to Step 5 |
| 4 | Check power supply lines for short circuit to ground | Switch off the ignition. Pull off plug on auxiliary heater control unit. Measure voltage between 'pin 1 and battery positive'. | < 0.3 V. Go to Step 5 | Short circuit to ground in auxiliary heater control unit plug leads 'pin 1 and fuse F4' in left fuse carrier. Repair wiring and replace faulty fuse(s). --> End |
| 5 | Check ground supply lines for short circuit to B+ | Measure voltage between 'pin 2 and body ground'. | < 0.3 V Go to Step 6 | Short circuit to B+ in auxiliary heater control unit plug leads and 'body ground'. Repair wiring and replace faulty fuse(s). --> End |
| 6 | Check power supply lines for open circuit | Switch off the ignition. Pull off plug on auxiliary heater control unit. Measure resistance between 'pin 1 and fuse F4' in fuse carrier at left of instrument panel. | < 0.5 ohms Go to Step 7 | Open circuit in auxiliary heater control unit plug leads 'pin 1 and fuse F4' in fuse carrier at left of instrument panel. Repair wiring. --> End |
| 7 | Check ground supply lines for open circuit | Measure resistance between 'pin 2 and body ground'. | < 0.5 ohms Go to Step 8 | Open circuit in auxiliary heater control unit plug leads 'pin 2 and body ground'. Repair wire(s). --> End |
| 8 | Check terminal 30 power supply at fuse | Measure voltage between fuse plug 'F4 and body ground' in left fuse carrier. | 11.4 to 14.5 V Go to Step 9 | Short circuit/contact resistance/corroded or loose connections near or in fuse carrier. Repair if possible, otherwise replace fuse carrier at left of dashboard. --> End |
| 9 | Replace auxiliary heater | > End | ||
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin connector on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wiring.
| CAUTION | Danger! Danger of fire due to leaking fuel. |
Note. The fuel supply of the auxiliary heater or metering pump must be ensured.
Note. Coolant temperature must be < 60 °C (140 °F) before the test!
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Erase fault memory in auxiliary heater control unit | Go to Step 2 | Go to Step 3 |
| 2 | Start up auxiliary heater | > End | Go to Step 3 |
| 3 | Perform 'drive link test' using 9718 PIWIS Tester | Go to Step 4 | |
| 4 | Erase fault memory in auxiliary heater control unit | > End | Go to Step 5 |
| 5 | Read out fault memory in auxiliary heater control unit | > End | Go to Step 6 |
| 6 | Work through faults | > End | Go to Step 7 |
| 7 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Coolant temperature must be < 60 °C (140 °F) before the test!
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Erase fault memory in auxiliary heater control unit | Go to Step 2 | Go to Step 3 |
| 2 | Start up auxiliary heater | > End | Go to Step 3 |
| 3 | Perform 'drive link test' using 9718 PIWIS Tester | Go to Step 4 | |
| 4 | Erase fault memory in auxiliary heater control unit | > End | Go to Step 5 |
| 5 | Read out fault memory in auxiliary heater control unit | > End | Go to Step 6 |
| 6 | Work through faults | > End | Go to Step 7 |
| 7 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| CAUTION | Danger! Danger of fire due to leaking fuel. |
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check wire in vehicle between auxiliary heater control unit and metering pump plug for open circuit | Switch off ignition Pull off plug A from auxiliary heater control unit Pull plug off the metering pump Measure resistance between pin 6 of plug A on auxiliary heater control unit and pin 2 on plug of metering pump | < 5 ohms Go to Step 3 | Repair wire or replace wiring harness --> End |
| 2 | Check wire in vehicle between auxiliary heater control unit and metering pump for short circuit to ground | Test resistance between pin 2 of metering pump plug and ground | Infinity ohms Go to Step 4 | Repair wire or replace wiring harness --> End |
| 3 | Check wire in vehicle between auxiliary heater control unit and metering pump for short circuit to B+ | Push on plug A of auxiliary heater control unit Switch on ignition Test voltage between pin 2 of metering pump plug and ground | < 0.3 V Go to Step 5 | Repair wire or replace wiring harness --> End |
| 4 | Check ground leads | Measure resistance between pin 1 of metering pump plug and vehicle ground | < 5 ohms Go to Step 6 | Repair wire or replace wiring harness --> End |
| 5 | Replace auxiliary heater | > End | ||
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Read out fault memory in air-conditioning system regulator control unit | Go to Step 3 | Work through faults --> End |
| 3 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 4 | Work through faults --> End |
| 4 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Go to Step 3 |
| 2 | Read out fault memory in vehicle electrical system control module | Go to Step 3 | Work through faults --> End |
| 3 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 4 | Work through faults --> End |
| 4 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End |
| 2 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Correct faults Go to Step 2 |
| 2 | Erase fault memory in auxiliary heater control unit | > End | Go to Step 3 |
| 3 | Activate coding for auxiliary heater in 'gateway' Using the 9588 Porsche System Tester II 'write in data' via 'Control module replacement'. | > End | Go to Step 4 |
| 4 | Continue troubleshooting, refer to CHECKING INSTRUCTIONS/CAN DATA BUS . | Go to Step 5 | Work through faults --> End |
| 5 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit | Go to Step 2 | Work through faults --> End | |
| 2 | Check wire in vehicle between auxiliary heater control unit and radio remote control receiver for open circuit | Switch off ignition Pull off plug A from auxiliary heater control unit Pull off plug A of radio remote control receiver Measure resistance between pin 1 of plug A on auxiliary heater control unit and pin 2 on plug A of radio remote control receiver. | < 5 ohms Go to Step 3 | Repair wire or replace wiring harness --> End |
| 3 | Replace hand-held transmitter | Go to Step 4 | Work through faults --> End | |
| 4 | Replace antenna | Go to Step 5 | Work through faults --> End | |
| 5 | Replace receiver | Go to Step 6 | Work through faults --> End | |
| 6 | Replace auxiliary heater | > End | ||
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin connector on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wiring.
Note. Depending on the fault codes entered in the 'fault memory' of the 9588 Porsche System tester II, check the fuel supply, the coolant circuit, or the air intake.
Note. Coolant temperature must be < 60 °C (140 °F) before the test!
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Unlock auxiliary heater control unit with 9588 Porsche System tester II in the 'Coding' menu item | Go to Step 2 | |
| 2 | Erase fault memory in auxiliary heater control unit | Go to Step 3 | Go to Step 7 |
| 3 | Perform 'drive link test' using 9718 PIWIS Tester | Go to Step 4 | |
| 4 | Start up auxiliary heater | > End | Go to Step 5 |
| 5 | Read out fault memory in auxiliary heater control unit | Go to Step 6 | |
| 6 | Work through faults | Go to Step 4 | Go to Step 7 |
| 7 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
- Ignition on
- Internal auxiliary heater control unit function test
Note. Visual inspection: During the next check, first ensure that the affected pins of the 14-pin plug connection on the wiring harness are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
| Work instruction | Display OK | If not OK | |
|---|---|---|---|
| 1 | Read out fault memory in auxiliary heater control unit and then erase | Go to Step 2 | Work through faults --> End |
| 2 | Replace auxiliary heater | > End | |
DIAGNOSIS TROUBLESHOOTING PROCEDURE
Poses Online