Explanations
TECH 1 Displays
| BATTERY VOLTAGE | Battery voltage (voltage supply of Motronic control unit) |
|---|---|
| TPS SIGNAL | Signal from throttle valve potentiometer |
| SIM. IDLE POS. SW | Idle position of throttle valve potentiometer |
| SIM. FULL POS. SW | Full load position of throttle valve potentiometer |
| INTAKE AIR TEMP. | Intake air temperature |
| COOLANT TEMP. | Coolant temperature |
| MASS AIR FLOW S. | Hot film mass air flow meter signal |
| KNOCK SIGNAL | Signal from knock sensor when knock occurs |
| VEHICLE SPEED | Processed signal from rear left wheel speed sensor |
| VEHICLE SP. PULSE | Signal from rear left wheel speed sensor |
| A / C thermost. SW | Air conditioning switch |
| Coolant temp. sw. | Coolant temperature switch |
| PARK / NEUTRAL SW. | Processed park / neutral switch signal from transmission management |
| TORQUE CONTROL | Shift process signal from transmission management |
| IGN. COIL CYL 1 + 4 | Ignition coil unit, cylinders 1 and 4 |
| IGN. COIL CYL 2 + 3 | Ignition coil unit, cylinders 2 and 3 |
| SEC. AIR PUMP REL. | Secondary air pump relay |
| TPS LOAD SIGNAL | Processed signal from throttle valve potentiometer |
| FUEL PUMP RELAY | Fuel injection unit relay |
| A / C RELAY | AC cut - off relay for AC compressor cut - off |
| EGR SOLENOID | Solenoid valve, exhaust gas recirculation |
| EGR PULSE RATIO | Exhaust gas recirculation, pulse ratio |
| ENGINE TYPE | Number of cylinders in engine |
| TRANSM. CODING | Transmission recognition |
| FUEL TANK VENT. | Tank vent valve |
| ENGINE SP. PULSE | Ignition pulse for tachometer |
| DESIRED IDLE | Nominal engine speed in idle operation |
| ENGINE SPEED | Actual engine speed in idle operation |
| DESIRED AIR IDLE | Nominal air throughput in idle operation (from characteristic map) |
| ACTUAL AIR IDLE | Actual air throughput in idle operation (from mass air flow meter signal) |
| IDLE AIR CONTROL | Deviation of pulse ratio of idle speed adjuster from value calculated by control unit |
| IAC ADAPT. SLOPE | Deviation of pulse ratio of idle speed adjuster from value calculated by control unit |
| IAC INTEGRATOR | Integrator value of idle speed adjuster |
| IAC BLOCK LEARN | Learn value of idle speed adjuster |
| 02 SENSOR LOOP | Open / closed loop via oxygen sensor |
| 02 SENSOR | Oxygen sensor voltage in mV |
| AIR / FUEL RATIO | Fuel / air ratio |
| CO ADJUSTMENT | CO adjustment |
| 02 INTEGRATOR | Integrator value for mixture - (02) - correction |
| 02 BLM IDLE THR. | Learned mixture characteristic map at idle speed |
| 02 BLM PART THR. | Learned mixture characteristic map in partial load range |
| SPARK ADVANCE | Firing angle BTDC calculated by control unit |
| KNOCK RETARD | Ignition adjustment for cylinders when knock occurs |
| INJECTION PULSE | Injection period in ms |
| CHECK LIGHT | Engine telltale |
| DIAG. REQUEST | Excitation lead for blink code readout (diagnostic plug Ter. B) |
| INJECTION CUTOFF | Cut - off of injectors in conjunction with F8: ECU Control |
| IMMOBILISER | Immobiliser function within Motronic control unit |
| IMMOBILISER SIG. | Immobiliser signal |
| IDLE SPEED | Reset of learn parameters for idle speed regulation |
| (see F6: ECU ADJUSTMENT) | |
| 02 BLM RESET | Reset of learn parameters for oxygen sensor regulation |
| (see F6: ECU ADJUSTMENT) | |
| IAC BLM RESET | Reset of learn parameters for idle regulation |
| (see F6: ECU ADJUSTMENT) | |
| CO ADJUSTMENT | Reset of learn parameters for CO adjustment regulation |
| (see F6: ECU ADJUSTMENT) | |
| RPM CONTROL | Adjustment of idle speed |
| (see F8: ECU CONTROL) | |
| IAC CONTROL | Adjustment of idle speed adjuster position |
| (see F8: ECU CONTROL) | |
| INJ. CONTROL | Injector cut - out |
| (see F8: ECU CONTROL) | |
| CONTROLLED EGR | Adjustment of EGR control valve |
| (see F8: ECU CONTROL) |