Multec- S X 14 XE / X 16 XE (L) F0:DATA LIST
| No. | TECH 1 Display | Conditions for Checking | Nominal Value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 27 | O2 SENSOR | Engine running at idle speed, cold | |||
| 350 to 550 mV alternating | |||||
| 13, 44, 45 | F9 / E9 | ||||
| Engine running at idle speed, operating temperature | 50 to 950 mV alternating |
Note:
During MY '95, the heated oxygen sensor in the X 14 XE, X 16 XE, X 16 XEL engines in the Corsa- B, Tigra and Astra- F is being replaced by an unheated version.
| Notes on Trouble-shooting: | Nominal Value: | Cause of fault: |
(If nominal value is not attained)
Part 1:
· Disconnect from base:
58 fuel pump relay K12 secondary air injection relay
· Bridge wiring harness plug
from: K58 base of fuel pump relay Ter. 2
to: K58 base of fuel pump relay Ter. 8
· Disconnect wiring harness plug from:
32 oxygen sensor
· Ignition ON
· Using multimeter, measure voltage:
from: P32 wiring harness plug for oxygen sensor Ter. A (wiring harness side)
to: ground
| higher than 11 V |
|---|
| · Check according to data list no. 12 FUEL PUMP RELAY |
· Using multimeter, measure voltage:
from: P32 wiring harness plug for oxygen sensor Ter. A (wiring harness side)
to: P32 wiring harness plug for oxygen sensor Ter. B (wiring harness side)
| higher than 11 V | · Circuit interruption |
from: P32 wiring harness plug for oxygen sensor Ter. B
| to: battery - , Ter. 31 |
Part 2:
· Using multimeter, measure voltage:
from: P32 wiring harness plug oxygen sensor Ter. C (wiring harness side)
to: ground
| · Ignition ON | 450 mV ± 100 mV | Lower than 350 mV |
· Short circuit to ground
· Circuit interruption
from: P32 wiring harness plug for oxygen sensor Ter. C
to: K57 wiring harness plug for engine control unit Ter. F9
· K57 engine control unit defective
Higher than 550 mV
· Short circuit to voltage
from: P32 wiring harness plug for oxygen sensor Ter. C
to: K57 wiring harness plug for engine control unit Ter. F9
· K57 engine control unit defective.
· Connect to base:
K58 fuel pump relay K12 secondary air injection relay
· Engine running at idle speed, operating temperature
· Using TECH 1, carry out:
SELECT MODE
F6:MISC. TESTS
F0:ADJUSTMENTS
Set engine to 1300 rpm using arrow keys.
· Using multimeter, measure voltage:
from: P32 oxygen sensor Ter. C
to: ground
(oxygen sensor plug disconnected)
| alternating |
50 to 950 mV
| · Oxygen sensor defective. |
· Accelerate briefly.
| on acceleration higher | |
|---|---|
| than 700 mV | · Mixture constantly too lean / rich. |
(see Part 4 / Part 3 )
Part 3
| Mixture constantly too rich (oxygen sensor voltage higher than 550 mV) |
· TECH 1 data list no. 05
TPS SIGNAL
· TECH 1 data list no. 06 MAP SENSOR
· TECH 1 data list no. 07
COOLANT TEMP.
· TECH 1 data list no. 08
INTAKE AIR TEMP.
| OK |
OK
OK
OK
| · Remedy according to data list no. 05 |
TPS SIGNAL
· Remedy according to data list no. 06
MAP SENSOR
· Remedy according to data list no. 07
COOLANT TEMP.
· Remedy according to data list no. 08
INTAKE AIR TEMP.
· Check fuel pump pressure
feed pressure:
| return pressure: | approx. 3.0 bar (idle) |
|---|---|
| approx. 0.3 to 1.5 bar | · Feed or return line blocked / kinked |
· Fuel pressure regulator defective.
· Incorrect injectors
· Leaky injectors (dripping)
| If nominal values are attained | · Check timing, oil consumption and tightness of valves. |
Part 4
| Mixture constantly too lean (oxygen sensor voltage lower than 350 mV) |
· TECH 1 data list no. 05
TPS SIGNAL
· TECH 1 data list no. 06
MAP SENSOR
· TECH 1 data list no. 07
COOLANT TEMP.
· TECH 1 data list no. 08
INTAKE AIR TEMP.
· TECH 1 data list no. 24
EGR POSITION CMD to No. 25
EGR POS. FDBK
· TECH 1 data list no. 26
FUEL TANK VENT.
| OK |
OK
OK
OK
OK
OK
| · Remedy according to data list no. 05 |
TPS SIGNAL
· Remedy according to data list no. 06
MAP SENSOR
· Remedy according to data list no. 07
COOLANT TEMP.
· Remedy according to data list no. 08
INTAKE AIR TEMP.
· Remedy according to data list no. 24
EGR POSITION CMD to No. 25
EGR POS. FDBK
· Remedy according to data list no. 26
FUEL TANK VENT.
· Check fuel pump pressure
Feed pressure:
| Return pressure: | approx. 3.0 bar (idle) |
|---|---|
| approx. 0.3 to 1.5 bar | · Feed line blocked / kinked |
· Injectors blocked or defective
· Fuel pressure regulator defective.
· Intake system leaky
· Exhaust system leaky
| · Incorrect injector |