C-27, Engine Speed Output Signal Circuit
| C-27, Engine Speed Output Signal Circuit |
|---|
| Test | Work Order Description | Nominal Value |
| T01 | Check: Short to Ground/Interruption of Signal Circuit | |
| Select and enable diagnostic tester actuator test: QUAD DRIVER T. Refer to B-5 F5: ACTUATOR TEST Test09 QUAD DRIVER T. | Test okay? |
| Yes: T02 | No: E04 |
| T02 | Check: Interruption of Signal Circuit | |
| Disconnect wiring harness connector from: K57 Control Unit - Multec X7 Instrument Panel & Multec X25 Motronic/Simtec/Multec & Automatic Transmission Measure resistance between the following terminals: K57 Control Unit - Multec Wiring Harness Connector Terminal B13 & X7 Instrument Panel & Multec Wiring Harness Connector Terminal 13 | less than 2 Ohm |
| Yes: T03 | No: E03 |
| T03 | Check: Interruption of Signal Circuit | |
| Measure resistance between the following terminals: K57 Control Unit - Multec Wiring Harness Connector Terminal B13 & X25 Motronic/Simtec/Multec & Automatic Transmission Wiring Harness Connector (control unit side) Terminal 11 | less than 2 Ohm |
| Yes: E01 | No: E02 |
| C-27, Engine Speed Output Signal Circuit |
|---|
| Result | Cause Of Fault |
| E01 | If programming/nominal value is okay and system is still faulty the following component is defective: K85 Control Unit - Automatic Transmission or U16 Display Unit - Clock, Radio, Info Display, Check Control (MID) or K57 Control Unit - Multec |
| E02 | Circuit interruption between: K57 Control Unit - Multec Wiring Harness Connector Terminal B13 & X25 Motronic/Simtec/Multec & Automatic Transmission Wiring Harness Connector (control unit side) Terminal 11 |
| E03 | Circuit interruption between: K57 Control Unit - Multec Wiring Harness Connector Terminal B13 & X7 Instrument Panel & Multec Wiring Harness Connector Terminal 13 |
| E04 | Repair the concerned circuit/component. Note: Check light circuit to control unit terminal B10 Fuel consumption signal circuit (TRIP COMPUTER) to control unit terminal B12 Engine speed output circuit (TN-SIGNAL) to control unit terminal B13 |
