Multec (X 12 SZ / X 16 SZ) F0: DATA LIST
| No. | TECH 1 Display | Conditions for Checking | Nominal Value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 33 | INJECTION PULSE | Ignition ON |
Engine OFF
| Engine cold | - | C 10/C 4 C 13/C 14 |
|---|---|---|
| Throttle valve completely CLOSED | greater than 4 ms | |
| Throttle valve completely OPEN (100 %) | less than 3 ms | |
| Engine running at idle speed, operating temperature | 0.7 to 1, 3 ms |
The ignition period is an internal value of the control unit.
If the ignition period deviates considerably from the above values, check the following points:
All consumers switched off?
COOLANT TEMP. OK ? (test step 02)
O2 SENSOR LOOP closed OK ? (test step 09)
O2 INTEGRATOR OK ? (test step 11)
O2 BLM CELL NO. OK ? (test step 13)
O2 BLM CELL CONT OK ? (test step 14)
PARK / NEUTRAL SW. in idle position (P / N) OK ? (lest step 31)
TPS SIGNAL OK ? (test step 04)
MAP SENSOR OK ? (test step 03)
IDLE AIR CONTROL OK ? (test step 07)
KNOCK PULSES OK ? (test step 25)
EGR POSITION CMD OK ? (test step 16)
FUEL TANK VENT. OK ? (test step 22)
If all above check points are OK: With TECH 1:
reset control unit (SELECT RESET IDLE ADJUST) repeat test
| Trouble - shooting: | Nominal Value: | Cause of Fault: |
(If nominal value is not attained)
· Select TECH 1 mode "F8"
· Using arrow keys, increase idle speed (1200 rpm)
· Switch off consumers
| approx. 1.1 ms | |
|---|---|
| · Set to 650 rpm using arrow key on TECH 1. | The ignition period should change due to the decreasing engine speed. |
| · Control unit defective |
· Ignition OFF
· Disconnect wiring harness plug Y 32
· Using multimeter, measure resistance:
from: injector Ter. A
| to: injector Ter. B | 1.4 W to 1.6 W |
at 20 °C / 68° F
1.6 W to 2.1 W
at 80° C / 176 F
Difference cold to warm at least 0.2 W!
| · Nozzle defective |
· Ignition OFF
· Measure voltage:
from: wiring harness plug Y 32 Ter. B
to: ground
| less than 1 V | · Short circuit in wiring harness |
from: wiring harness plug Y 32 Ter. B
| to: battery + |
· Ignition OFF
· Measure voltage:
from: wiring harness plug Y 32 Ter. B
| to: ground | greater than 11 V | · Lead interruption |
from: wiring harness plug Y 32 Ter. B
to: ignition lock S 1 Ter. 15
· Short circuit in wiring harness
from: control unit K 32 Ter. B
to: ground
· Measure voltage:
from: wiring harness plug Y 32 Ter. A
to: ground
| less than 1 V | · Short circuit in wiring harness |
from: wiring harness plug Y 32 Ter. A
| to: battery voltage |
· Ignition OFF
· Disconnect wiring harness plug K 57
Using multimeter, measure resistance:
from: wiring harness plug Y 32 Ter. A
to: wiring harness plug K 57 Ter. C 10
| less than 2 W | · Lead interruption |
from: wiring harness plug Y 32 Ter. A
| to: wiring harness plug K 57 Ter. C 10 |
· Using multimeter, measure resistance:
from: wiring harness plug Y 32 Ter. A
to: ground
| greater than 100 kW | · Short circuit in wiring harness |
from: wiring harness plug Y 32 Ter. A (BL)
| to: ground |
· Astra Multi Info Display receives no consumer signal:
· Disconnect wiring harness plug X 20
· Measure voltage:
from: wiring harness plug X 20 Ter. 21
to: ground
| · Ignition ON | greater than 11 V | · Lead interruption |
from: control unit K 57 Ter. B 4
to: wiring harness plug X 20 Ter. 21 (inspect wiring harness plug X 9 Ter. 5)
· Short circuit in wiring harness
from: control unit K 57 Ter. B 4
| to: ground |
· Ignition OFF
· Measure voltage:
from: wiring harness plug X 20 Ter. 21
| to: ground | less than 1 V | · Short circuit in wiring harness |
from: control unit K 57 Ter. B 4
to: battery +
or
· Control unit defective.
· Ignition OFF
· Disconnect plug from control unit K 57
· Using multimeter, measure resistance:
from: control unit K 57 Ter. C 13
to: control unit K 57 Ter. C 14
| less than 2 W | · Lead interruption |
from: control unit K 57 Ter. C 13
| to: control unit K 57 Ter. C 14 |
· Measure voltage:
from: control unit K 57 Ter. 13
| to: control unit K 57 Ter. 14 | less than 0.1 V | · Short circuit in wiring harness |
from: control unit K 57 Ter. C 13
to: battery +
from: control unit K 57 Ter. C 14
| to: battery + | |
|---|---|
| If nominal values attained | |
| · Control unit defective |