Difference between revisions of "00538"
From Ross-Tech Wiki
RtWiKiSyS0p (talk | contribs) |
|||
| (One intermediate revision by the same user not shown) | |||
| Line 33: | Line 33: | ||
* When found in Control Module for Heating/Climate Control (J255/J301): | * When found in Control Module for Heating/Climate Control (J255/J301): | ||
** Disconnect the electrical Connectors to the Position Sensors one after another, erase Fault Codes and check Fault Codes again. If the "Reference Voltage" Fault Code is no longer recognized (and the Fault Code for the reappears after reconnecting), the applicable Flap Motor/Position Sensor must be replaced. | ** Disconnect the electrical Connectors to the Position Sensors one after another, erase Fault Codes and check Fault Codes again. If the "Reference Voltage" Fault Code is no longer recognized (and the Fault Code for the reappears after reconnecting), the applicable Flap Motor/Position Sensor must be replaced. | ||
| − | + | *** When additional components such as G107 (sunlight sensor) are on the same 5V reference voltage supply make sure to unplug all sensors while troubleshooting using this method. | |
=== 00538 - Reference Voltage : Faulty === | === 00538 - Reference Voltage : Faulty === | ||
| Line 53: | Line 53: | ||
* When found in Central Electronics Control Module (J519): | * When found in Central Electronics Control Module (J519): | ||
** Specifically check the (Ground) Wiring from the Central Electronics Control Module (J519) to the Battery. | ** Specifically check the (Ground) Wiring from the Central Electronics Control Module (J519) to the Battery. | ||
| − | + | * When found in the Central Electronics / Body Control Module (BCM) in a [[VW Jetta (16/AJ) | (16/AJ) chassis Jetta]] check fuse SB19. | |
[[Category:Fault Codes]] | [[Category:Fault Codes]] | ||
__FORCETOC__ | __FORCETOC__ | ||
Latest revision as of 10:51, 30 October 2017
00538 - Reference Voltage
00538 - Reference Voltage : Signal too large
00538 - Reference Voltage : Signal too small
Possible Causes
- Common Causes
- Fuse(s) faulty
- Wiring and/or Connector(s) from/to Control Module faulty
- Control Module faulty
- Heating/Climate Control specific Causes
- Fuse(s) faulty
- Wiring and/or Connector(s) from/to Control Module for Heating/Climate Control (J255/J301) faulty
- Flap Motor/Position Sensor faulty
- Control Module for Heating/Climate Control (J255/J301) faulty
Possible Solutions
- Common Solutions
- Check/Replace Fuse(s)
- Check/Repair Wiring and/or Connector(s) from/to Control Module
- Check/Replace Control Module
- Heating/Climate Control specific Solutions
- Check/Replace Fuse(s)
- Check/Repair Wiring and/or Connector(s) from/to Control Module for Heating/Climate Control (J255/J301)
- Check/Replace Flap Motor/Position Sensor
- Perform Output Test
- Control Module for Heating/Climate Control (J255/J301)
Special Notes
- When found in Control Module for Heating/Climate Control (J255/J301):
- Disconnect the electrical Connectors to the Position Sensors one after another, erase Fault Codes and check Fault Codes again. If the "Reference Voltage" Fault Code is no longer recognized (and the Fault Code for the reappears after reconnecting), the applicable Flap Motor/Position Sensor must be replaced.
- When additional components such as G107 (sunlight sensor) are on the same 5V reference voltage supply make sure to unplug all sensors while troubleshooting using this method.
- Disconnect the electrical Connectors to the Position Sensors one after another, erase Fault Codes and check Fault Codes again. If the "Reference Voltage" Fault Code is no longer recognized (and the Fault Code for the reappears after reconnecting), the applicable Flap Motor/Position Sensor must be replaced.
00538 - Reference Voltage : Faulty
Possible Causes
- Fuse(s) faulty
- Wiring and/or Connector(s) from/to Battery faulty
- Control Module faulty
Possible Solutions
- Check Fuse(s)
- Check Wiring and/or Connector(s) from/to Battery
- Check/Replace Control Module
Special Notes
- When found in Central Electronics Control Module (J519):
- Specifically check the (Ground) Wiring from the Central Electronics Control Module (J519) to the Battery.
- When found in the Central Electronics / Body Control Module (BCM) in a (16/AJ) chassis Jetta check fuse SB19.