Output State Control - 97 MY (page 2 of 3)
- Make
- Aston Martin
- Model
- DB7 Factory Workshop Manual Volume 2: Electrics, Body and Air Conditioning
- Year
- 1994–1998
- Section
- Operating instructions
The datalogger software is designed to aid the technician in identifying permanent or intermittent faults in the DB7's electrical and electronic systems. It can provide a recorded view of selected signals over a chosen time period. This recording may be captured in a static, rolling road or road test situation. Data recorded during such tests may then be analysed on completion of the test or printed out for later analysis.
Datalogger operation is described using a fully worked example at the end of this PDU Users Guide.
The full list of datalogger signal names and descriptions is provided in the DB7 OBD II Diagnostic Manual and on the PDU screen. The following list is a summary of the PCM signals which may be monitored.
| Signal | Description |
|---|---|
| ACCS | Air-Con Control Switch - 1 = A/C On |
| ACP | Air-Con Pressure Sensor - 1 = A/C pressure high |
| ACT MAX | Maximum Intake Air Temperature signal during normal running |
| Adap Fuel 1 | Current Adaptive Fuel Correction - (% of range) |
| Adap Fuel 2 | Current Adaptive Fuel Correction - (% of range) |
| ADPT1F | Adaptive Fuel - Table 1 failure mode |
| ADPT2F | Adaptive Fuel - Table 2 failure mode |
| AIR | Air Pump On/Off - 1 = Pump On |
| AIM | Air Pump Monitor - 1 = high, pump on |
| B+ | Battery Positive - Volts |
| BARO | Barometric Pressure |
| CID | Cylinder Identification - Cam sensor status |
| CMP STAT | Cam Position Sensor - 1 = CID mis, not currently reliable |
| DRVCNT | Number of OBDII Drive Cycles Completed |
| DSDRPM | Desired engine speed (RPM) |
| DTCOUNT | Diagnostic Trouble Codes Count (Fault codes + pending codes. MIL and non-MIL) |
| ECT MAX | Maximum Engine Coolant Temperature signal during normal running |
| ECT STAT | Engine Coolant Temperature - in or out of range |
| ECT-C | Engine Coolant Temperature - °C or raw counts |
| ECT-V | Engine Coolant Temperature - Volts or raw counts |
| EGR STAT | EVP EGR sensor failure |
| ENGLOAD | Engine Load (Ratio of air charge over standard) |
| ENGRPM | Engine Speed - RPM |
| EPT | DPFE Sensor feedback |
| EVAP DC | Cannister Purge Duty Cycle (% on) |
| EVAPCVA | Vapour Management Valve (VMV) fault detected |
| Evts HI | Cumulative cylinder events total carried over from previous background logic executions |
| Evts LO | Cumulative cylinder events total carried over from previous background logic executions |
| FPM | Fuel Pump Monitor - 0 = pump off, 1 = pump on |
| FPUMP DC | Desired Fuel Pump Duty Cycle - 0% or 100% |
| H02S12 | Sensor Output - Volts |
| H02S21 | Sensor Output - Volts |
| H02S22 | Sensor Output - Volts |
| H02SII | Sensor Output - Volts |
| HFC | High Speed Fan Status |
| Htr11 ret | Highest number of retries seen on the HO2S 11 heater |
| Htr12 ret | Highest number of retries seen on the HO2S 12 heater |
| Htr21 ret | Highest number of retries seen on the HO2S 21 heater |
| Htr22 ret | Highest number of retries seen on the HO2S 22 heater |
| HTRCM11 | HO2S 11 heater current |
| HTRCM12 | HO2S 12 heater current |
| HTRCM21 | HO2S 21 heater current |
| HTRCM22 | HO2S 22 heater current |
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