Multec (X 12 SZ / X 16 SZ) F0: DATA LIST
| No. | TECH 1 Display | Conditions for Checking | Nominal Value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 03 | MAP SENSOR | Ignition ON | |||
| 0.9 to 1.1 bar |
4.26 to 5.0 V
(dependent on altitude)
| 33, 34 | B 8, | ||
|---|---|---|---|
| A 7 /A 11 | |||
| Engine running at idle speed, operating temperature | 0.28 to 0.40 bar |
1 to 1.58 V
| Trouble - shooting: | Nominal Value: | Cause of Fault: |
(If nominal value is not attained)
· Ignition ON
Disconnect plugs from intake manifold pressure sensor P 23, from throttle valve potentiometer P 34, from coolant temperature sensor P 30 and from exhaust gas recirculation valve Y 18.
· Ignition OFF
· Measure voltage:
from: wiring harness plug P 23 Ter. B
to: ground
| less than 0.1 V | · Short circuit in wiring harness |
from: intake manifold pressure sensor P 23 Ter. C (+ 5 volts)
| to: intake manifold pressure sensor P 23 Ter. B (input) |
· Ignition OFF.
· Bridge intake manifold pressure sensor plug P 23:
from: wiring harness plug Ter. C
to: wiring harness plug Ter. B
| · Ignition ON | 4.5 to 5.5 V | · Short circuit in wiring harness |
from: intake manifold pressure sensor P 23 Ter. A (ground)
to: intake manifold pressure sensor P 23 Ter. B (input)
· Short circuit in wiring harness
from: intake manifold pressure sensor P 23 Ter. A
to: intake manifold pressure sensor P 23 Ter. C (+ 5 V)
· Lead interruption
from: control unit K 57 Ter. A 7 (input)
to: intake manifold pressure sensor P 23 Ter. B
· Lead interruption
from: control unit K 57 Ter. B 8 (+ 5 volts)
to: intake manifold pressure sensor P 23 Ter. C.
· Control unit defective.
· Ignition OFF
· Connect throttle valve potentiometer 4.9 to 5.1 Vplug P 34
· Ignition ON
| · Fault in circuit, throttle valve potentiometer P 34 |
· Ignition OFF
· Connect coolant temperature sensor plug P 30
· Ignition ON
| 4.9 to 5.1 V | · Fault in circuit, coolant temperature sensor P 30 |
· Ignition OFF
· Connect exhaust gas recirculation valve plug Y 18
· Ignition ON
| 4.9 to 5.1 V | · Fault in circuit, exhaust gas recirculation valve Y 18 |
· Ignition OFF
· Using multimeter, measure resistance:
from: control unit K 57 Ter. A 1 1
to: intake manifold pressure sensor plug P 23 Ter. A
| less than 2 W | · Lead interruption |
from: control unit K 57 Ter. A 11
to: intake manifold pressure sensor plug P 23 Ter. A
· Reconnect plug P 23.
Connect Vacuum Pump MKM - 667 to vacuum connection of P 23.
· Ignition OFF
| · Ignition ON | Voltage display Voltage display |
on TECH 1 on TECH 1
0 bar 4.9 to 5.1 V
0.2 bar 3.4 to 3.9 V
0.4 bar 2.3 to 2.8 V
0.6 bar 1.2 to 1.7 V
| · Vacuum hose leaky or blocked |
· Intake manifold pressure sensor defective
| · Control unit defective |