F0:DATA LIST
| No. | TECH 1 Display | Conditions for Checking | Nominal Value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 28 | OUTS.SENSOR | Ignition ON | TECH 1 display | 169, 171 | 4/3 |
| TEMP | approximately the same as MID display |
(outside temperature)
| 26-pin | |||
|---|---|---|---|
| TECH 1 display: | |||
| Note: | |||
| The TECH 1 display shows the | -30 °C approx. 4,47 V | ||
| current , undampened outside | -20 °C approx. 4,12 V | ||
| temperature. The MID shows the | -10 °C approx. 3,65 V | ||
| dampened outside temperature, i.e. | 0 °C approx. 3,05 V | ||
| the outside temperature averaged | 10 °C approx. 2,46 V | ||
| over an extended period of time. | 20 °C approx. 1,91 V | ||
| Therefore, if the TECH 1 and MID | 25 °C approx. 1,66 V | ||
| displays do not approximately | 30 °C approx. 1,41 V | ||
| match, wait for a while. | 35 °C approx. 1,27 V | ||
| 40 °C approx. 1,09 V | |||
| 45 °C approx. 0,92 V | |||
| Notes for Trouble-shooting: | Nominal Value: | Cause of Fault: |
(If nominal value is not attained)
| · Release and disconnect wiring harness plug from outside temperature sensor P13 | ||
|---|---|---|
| · Ignition ON | ||
| · Measure voltage between both connections of sensor plug: | higher than 4.5 V | · Lead from outside temperature sensor P13 to 26-pin MID wiring harness plug Ter. 4 has short circuit to ground or is interrupted. |
| · Measure resistance of outside temperature sensor P13: | see table at the end of this test step, depending on outside temperature | |
| · Outside temperature sensor P13 defective. | ||
| · Remove instrument assembly | ||
| · Release 26-pin wiring harness plug and disconnect from MID display | ||
| · Ignition ON | ||
| · Measure voltage to ground at Ter. 3 and then at Ter. 4 of 26-pin MID wiring harness plug: | lower than 1 V | · Short circuit to + battery voltage in lead from MID to outside temperature sensor via wiring harness plug connection X1/Ter. 32 or Ter. 34 |
| · Measure resistance to ground: | higher than 200 kW | · Short circuit to ground in lead from MID to outside temperature sensor via X1/Ter. 32 or Ter. 34. |
| · Measure resistance between Ter. 3 and Ter. 4: | higher than 200 kW | · Mutual lead short circuit in lead to outside temperature sensor via X1/Ter. 32 or Ter. 34 |
· Connect wiring harness plug connection for outside temperature sensor P13 again.
| · Measure resistance in MID wiring harness plug between Ter. 4 and | see table below, depending on outside temperature | · Interruption in lead connection from MID to outside temperature sensor P13 |
|---|---|---|
| Ter. 3: | ||
| If nominal values are attained: | ||
| · MID defective |
· Resistance of outside
temperature sensor P13
| depending on outside | |
|---|---|
| temperature: | - 32 °C approx. 92 kW |
| - 16 °C approx. 39 kW | |
| 0 °C approx. 16 kW | |
| 8 °C approx. 10,5 kW | |
| 16 °C approx. 7,4 kW | |
| 20 °C approx. 6,1 kW | |
| 24 °C approx. 5 kW | |
| 32 °C approx. 3,5 kW | |
| 48 °C approx. 2 kW |