|
No.
|
TECH 1 Display
|
Conditions for Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
15
|
KNOCK VOLTAGE
|
Engine running at idle speed, operating temperature
|
2.0 to 3.0 V
|
16, 18
|
E1
|
|
|
|
|
|
|
|
|
Notes on
Trouble-shooting:
|
Nominal
Value:
|
Cause of
fault:
(If nominal
value is not attained)
|
|
Corsa-B, Tigra
|
|
|
|
· Ignition OFF
· Disconnect
wiring harness plug:
X10 plug, engine & injectors
· Ignition ON
· Using
multimeter, measure voltage:
from: X10 plug, engine & injectors Ter. 4
(control unit side) (Corsa-B, Tigra)
to: ground
|
4.5 to 5.5 V
|
· Short
circuit to voltage
(with measured value higher than 5.5 V) or
short circuit to ground/circuit interruption
(with measured value lower than 4.5 V)
from: K57 engine control unit Ter. E1
to: X10 plug, engine & injectors Ter. 4
(Corsa-B, Tigra)
· K57 engine
control unit defective
|
|
· Using
multimeter, measure voltage:
from: X10 plug, engine & injectors Ter. 4
(component side) (Corsa-B, Tigra)
to: ground
|
lower than 0.1 V
|
· Short circuit
to voltage
from: X10 plug, engine & injectors Ter. 4
(component side) (Corsa-B, Tigra)
to: P46 knock sensor
|
|
· Ignition OFF
· Using
multimeter, measure resistance:
from: X10 plug, engine & injectors Ter. 4
(component side) (Corsa-B, Tigra)
to: ground
|
about 4 kW
|
· Short circuit
to ground or lead interruption
from: X10 plug, engine & injectors Ter. 4
(component side) (Corsa-B, Tigra)
to: P46 knock sensor
· Check P46 knock
sensor ground connection
· P46 knock
sensor defective
|
|
Astra- F
|
|
|
|
· Ignition OFF
· Disconnect
wiring harness plug from:
P46 knock sensor
· Ignition ON
· Using
multimeter, measure voltage
from: P46 wiring harness plug for knock sensor
(control unit side)
to: ground
|
4.5 to 5.5 V
|
· Short circuit
to voltage
(with measured value higher than 5.5 V) or short
circuit to ground/circuit interruption
(with measured value lower than 4.5 V)
from: K57 engine control unit Ter. E1
to: P46 wiring harness plug for knock sensor
· K57 control
unit defective
|
|
· Using
multimeter, measure voltage
from: P46 wiring harness plug for knock sensor
(component side)
to: ground
|
lower than 0.1 V
|
· Short circuit
to voltage
from: P46 wiring harness plug for knock sensor
to: P46 knock sensor
|
|
· Ignition OFF
· Using
multimeter, measure resistance:
from: P46 wiring harness plug for knock sensor
(component side)
to: ground
|
about 4 kW
|
· Short circuit
to ground or lead interruption
from: P46 wiring harness plug for knock sensor
to: P46 knock sensor
· Check P46 knock
sensor ground connection
· P46 knock
sensor defective
|
|
|
|
|
|
|
|
|
|
|
|
|
