F0:DATA LIST
| No. | TECH 1 Display | Conditions for Checking | Nominal Value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 43 | INJECTION PULSE | Engine running in partial load range, operating | 25,26,27, | ||
| 28, | 16,17 | ||||
| temperature | 2.5 to 3.6 ms | 81,82,83, | |||
| 84 | 34,35 | ||||
| Switch off all consumers | C 25 XE |
also:
29,32,85,
| 86 | C 25 XE |
also:
| 15,33 |
This test step serves as a learning and checking value for better comprehension of the system and to evaluate the system with external influences.
The injection period is composed of several elements which have an effect on the size of the signal.
If the measurements of the following test steps deviate from the nominal values, carry out trouble-shooting.
Test Step
| No. | Check of | Further additional causes of fault are: |
|---|---|---|
| · Lead interruptions | ||
| 01 | BATTERY VOLTAGE | - fuel pump relay K 68 / Ter. 37 (+) to injectors |
| 02 | TPS SIGNAL | - Gontrol unit K 61/ |
| 05 | INTAKE AIR TEMP. | C 20 XE: Ter. 16, Ter. 17, Ter. 34, Ter. 35 |
| 06 | COOLANT TEMP. | C 25 XE: Ter. 15, Ter. 16, Ter. 17, Ter. 33, Ter. 34, Ter. 35 |
| 07 | MASS AIR FLOW S. | to injectors |
| 23 | ENGINE LAOD SIG: | · Pressure regulator defective |
| 25 | FUEL PUMP RELAY | · Injectors jammed |
| 30 | ENGINE SPEED | · Electromagnetic interference caused by |
| 37 | O2 SENSOR | - ignition leads (position further away from wiring harness) |
| 38 | O2 INTEGRATOR | - alternator (worn carbon brushes produce sparks) |
| 39 | O2 BLM IDLE THR. | · Control unit K 61 defective |