|
No.
|
TECH 1 Display
|
Conditions for Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
|
01
|
CHECK LIGHT
|
Ignition ON
Note:
During diagnosis with TECH 1, the system
telltale does not extinguish.
When TECH 1 is disconnected, the telltale
extinguishes after about 4 s only if the control unit has not recognized a
fault in the system.
|
ON 0 V
System telltale is on
|
-
|
9, 10
|
|
|
Trouble-shooting:
|
Nominal Value:
|
Cause of Fault:
(If
nominal value is not attained)
|
|
|
For checking operations, observe the safety
regulations detailed in section 1.1 of these Checking Procedures.
The
vehicle battery must always be disconnected except when the checking
operations include voltage measurement.
|
|
· Ignition
OFF
· Disconnect
battery
· Disconnect
instrument panel/contact
unit wiring harness plug X 91
(observe safety measures)
· Disconnect
co-driver airbag unit
wiring harness plug X 93 (if present)
· Disconnect
airbag control unit wiring harness plug X 90 (observe safety measures)
· Connect
battery
|
System telltale OFF
|
· Short
circuit to voltage
from: ignition lock S 1
Ter. 15
to: telltale H 23
· Ignition
lock S 1 defective.
|
|
|
· Ignition
ON
|
System telltale ON
|
Corsa-B only:
· Fuse
F 17 defective.
Astra-F only:
· Fuse
F 7 defective.
Vectra/Cavalier, Calibra only:
· Fuse
F 2 defective.
All vehicles:
· Telltale
H 23 defective.
· Lead interruption
from: ignition lock S 1
Ter. 15
to: telltale H 23
· Inspect
airbag control unit wiring harness plug X 90 (short circuit bridge Ter. 9 to
Ter. 10)
· Fault
in wiring harness between instrument and airbag control unit (see following
checks)
|
|
|
· Insert
Adapter KM-609-9 from Electronic Kit I in airbag control unit wiring harness
plug X 90 in slot under Ter. 9 and Ter. 10 (short circuit bridge opened)
|
System telltale OFF
|
Corsa-B only:
· Short circuit to ground
from: instrument wiring
harness plug X 17 Ter. 10
to: airbag control
unit wiring harness plug X 90 Ter. 9
Astra-F, Vectra/Cavalier, Calibra only:
· Short
circuit to ground
from: instrument wiring
harness plug X 22 Ter. 2
to: airbag control
unit wiring harness plug X 90 Ter. 9
|
|
|
· Measure
voltage:
from: airbag control
unit wiring harness plug X 90 Ter. 9
to: ground
|
greater than 11 V
|
Corsa-B only:
· Lead
interruption
from: instrument wiring
harness plug X
17 Ter. 10
to: airbag control
unit wiring harness plug X 90 Ter. 9
Astra-F, Vectra/Cavalier, Calibra only:
· Lead
interruption
from: instrument wiring
harness plug X 22 Ter. 2
to: airbag control
unit wiring harness plug X 90 Ter. 9
|
|
|
· Ignition
OFF
· Measure
voltage:
from: airbag control
unit wiring harness plug X 90 Ter. 9
to: ground
|
less than 0.1 V
|
· Short
circuit in wiring harness
from: airbag control
unit wiring harness plug X 90 Ter. 9
to: battery +, Ter.
30
|
|
|
|
If nominal values are attained
|
· Airbag
control unit wiring harness plug X 90 defective.
· Control
unit defective.
|
|
|
|
|
|
|
|
|
|
|
