Adjust PR4 Pa Sensor
Dave Blundell sez "Vernon (deluded) sent me much of this info." As a rule of thumb, 90 PR4s have external PA sensors, and 91 ECUs have internal PA sensors.
Adapted from pgmfi.org wiki
Dave Blundell sez "Vernon (deluded) sent me much of this info." As a rule of thumb, 90 PR4s have external PA sensors, and 91 ECUs have internal PA sensors. You can tell (to some degree) by looking at the "code" of the ECU:
| Label | Description |
|---|---|
| A00 | 90 5 Speed (-33 program) |
| A01 | 90 5 Speed (?? program) |
| A02 | 90 5 Speed (-54 program) |
| A51 | 90 Automatic (?? program) |
| A52 | 90 Automatic (-54 program) |
| A10 | 91 5 Speed (-92 program) |
| A12 | 91 5 speed (-92 program) |
| A60 | 91 auto (-92 program) |
| A62 | 91 auto (-92 program) |
Ok, with that out of the way... It is easy to select whether to use a internal or external PA sensor. See the following table:
| Part | External PA | Internal PA |
|---|---|---|
| PA Sensor | missing | installed |
C103 |
missing | present(103Z) |
R92 |
jumper | 10Kohm |
C106 |
missing | present(103Z) |
editIt seems that the Internal PA ECU is missing C106, and the External PA ECU has C106 present.
Credits and source
Authors blundar, warrick
Source Adapted from Adjust PR4 Pa Sensor on pgmfi.org wiki. Licensed under CC BY-NC-SA 1.0.