|
No.
|
TECH 1 Display
|
Conditions for Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
12
|
FUEL PUMP RELAY
|
Ignition ON
Engine running at idle speed
|
INACTIVE 12V
ACTIVE 0V
|
28, 29, 32
|
A12
|
|
|
|
|
|
|
|
|
Notes on
Trouble-shooting:
|
Nominal
Value:
|
Cause of
fault:
(If nominal
value is not attained)
|
|
· Ignition OFF
· Disconnect from
base:
K58 fuel pump relay K12 secondary air injection relay
· Disconnect
wiring harness plug:
X10 plug, engine & injectors L2 direct ignition
module Y15 secondary air injection solenoid valve Y34 tank vent solenoid
valve Y18 exhaust gas recirculation solenoid valve (Astra- F)
· Using
multimeter, measure voltage
from: K58 base of fuel pump relay Ter. 4
to: ground
|
higher than 11 V
|
· Short
circuit to ground or circuit interruption
from: K58 base of fuel pump relay Ter. 4
to: K57 wiring harness plug for engine control
unit Ter. A6
to: battery +, Ter. 30
|
|
· Using
multimeter, measure voltage
from: K58 base of fuel pump relay Ter. 2
to: ground
|
lower than 0.1 V
|
· Short circuit
to voltage
from: K58 base of fuel pump relay Ter. 2
to: K57 wiring harness plug for engine control
unit Ter. E16, F3
to: L2 plug of direct ignition module Ter. 1
to: S1 ignition lock Ter. 15
to: X10 plug, engine & injectors Ter. 15
(Corsa- B, Tigra)
to: Y18 exhaust gas recirculation solenoid valve
Ter. E (Astra- F)
to: Y34 tank vent solenoid valve Ter. B
(Astra- F)
to: P47 camshaft sensor Ter. A (Astra- F)
· S1 ignition
lock defective
|
|
· Ignition ON
· Using
multimeter, measure voltage
from: K58 base of fuel pump relay Ter. 2
to: ground
|
higher than 11 V
|
· Short circuit
to ground or circuit interruption
from: K58 base of fuel pump relay Ter. 2
to: K57 wiring harness plug for engine control
unit Ter. E16, F3
to: L2 plug of direct ignition module
Ter. 1
to: S1 ignition lock Ter. 15
to: X10 plug, engine & injectors Ter. 15
(Corsa- B, Tigra)
to: Y18 exhaust gas recirculation solenoid valve
Ter. E (Astra- F)
to: Y34 tank vent solenoid valve Ter. B
(Astra- F)
to: P47 camshaft sensor Ter. A (Astra- F)
· S1 ignition
lock defective
|
|
· Using
multimeter, measure voltage
from: K58 base of fuel pump relay Ter. 6
to: ground
|
lower than 0.1 V
|
· Short circuit
to voltage
from: K58 base of fuel pump relay Ter. 6
to: K57 wiring harness plug for engine control
unit Ter. A12
|
|
· Using
multimeter, measure voltage
from: K58 base of fuel pump relay Ter. 8
to: ground
|
lower than 0.1 V
|
· Short circuit to
voltage
from: K58 base of fuel pump relay Ter. 8
to: Y15 secondary air injection solenoid valve
Ter. 1
to: Y34 tank vent solenoid valve Ter. B
to: K12 base of secondary air injection solenoid
valve Ter. 4
to: M21 fuel pump
to: X10 plug, engine & injectors Ter. 8
(Corsa- B, Tigra)
to: X10 plug, engine & injectors Ter. 7
(Astra- F)
to: Y18 exhaust gas recirculation solenoid valve
Ter. E (Astra- F)
to: P47 camshaft sensor Ter. A (Astra- F)
|
|
· Ignition OFF
· Connect test
lamp:
from: K58 base of fuel pump relay Ter. 2
to: K58 base of fuel pump relay Ter. 6
· Ignition ON
· Using
TECH 1, carry out:
F5:ACTUATOR
TEST FUEL PUMP REL.
· TECH 1
data list no. 12 FUEL PUMP RELAY
· Ignition OFF
· Bridge wiring
harness plug:
from: K58 base of fuel pump relay Ter. 2
to: K58 base of fuel pump relay Ter. 8
|
alternating:
test lamp ON
ACTIVE 0V
and
test lamp OFF
INACTIVE 12V
|
· Short circuit
to ground or circuit interruption
from: K58 base of fuel pump relay Ter. 6
to: K57 wiring harness plug for engine control
unit Ter. A12
· K57 engine
control unit defective
|
|
· Ignition ON
|
M21 fuel pump ON
|
· F26 fuse
defective (Corsa- B, Tigra)
· F2 fuse
defective (Astra- F)
· Fault in anti-
theft warning system (see Anti- theft Warning System Checking
Procedures)
· Short circuit
to ground
from: K58 base of fuel pump relay Ter. 8
to: Y15 secondary air injection solenoid valve
Ter. 1
to: K12 base of secondary air injection relay
Ter. 4
to: M21 fuel pump Ter. A
to: P32 oxygen sensor Ter. A
to: X10 plug, engine & injectors Ter. 8
(Corsa- B, Tigra)
to: Y34 tank vent solenoid valve Ter. B
(Corsa- B, Tigra)
to: X10 plug, engine & injectors Ter. 7
(Astra- F)
to: K57 wiring harness plug for engine control
unit Ter. F3 (Astra- F)
|
|
|
|
· Circuit
interruption
from: M21 fuel pump Ter. B
to: battery - , Ter. 31
· M21 fuel pump
defective
· K57 engine
control unit defective (Astra- F)
|
|
|
If nominal values are attained
|
· K58 fuel pump
relay defective
|
|
|
|
|
|
|
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