|
No.
|
TECH 1 Display
|
Conditions for Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
04
|
BRAKE SWITCH
|
Ignition ON
Brake not actuated
|
OPEN 0 V
|
37
|
|
|
|
|
Brake actuated
|
CLOSED 12 V
|
|
|
|
|
|
Note:
Control unit terminals for brake lamp switch:
ABS-2E: Ter.
25 and 20
ABS-2EH
with ETC:
X 90 Ter. 23/X 88 Ter. 3
ABS-2EH
without ETC:
X
89 Ter. 9/X 88 Ter. 3
ETC = Electronic Traction Control
|
|
|
|
|
Notes
for Trouble-shooting:
|
Nominal
Value:
|
Cause
of Fault:
|
|
Only applies to KADETT-E/ASTRA-E/BELMONT with ABS-2E:
|
|
|
|
· Ignition ON
Actuate brake
|
Left and right brake lamps illuminate
|
· If nominal value
is attained, continue at next trouble-shooting section
· Fuse F 8 defective
· Lead interruption
between fuse F 8 and brake lamp switch S 8
· Brake lamp switch
S 8 defective
· Lead interruption
between brake lamp switch S 8 and plug connection X 6/Ter. 11
· Lead interruption
between plug connection X 6/Ter. 11 and brake lamps
|
|
· Ignition OFF
Remove plug from control unit K 50
Connect voltmeter between K 50/Ter. 25 and K 50/Ter. 10
Ignition ON
Actuate brake
|
|
|
|
|
12 V
|
· Lead interruption
between plug connection X 6/Ter. 11 and control unit K 50/Ter. 25
· Control unit K 50
defective
|
|
Only applies to CALIBRA with ABS-2E:
|
|
|
|
· Ignition ON
Actuate brake
|
Left and right brake lamps illuminate
|
· If nominal value
is attained, continue at next trouble-shooting section
· Fuse F 7 defective
· Lead interruption
between fuse F 7 and brake lamp switch S 8
· Brake lamp switch
S 8 defective
· Lead interruption
between brake lamp switch S 8 and plug connection X 6/Ter. 11
· Lead interruption
between plug connection X 6/Ter. 11 and brake lamps
|
|
· Ignition OFF
Remove plug from control unit K 50
Connect voltmeter between K 50/Ter. 25 and K 50/Ter. 10
Ignition ON
Actuate brake
|
|
|
|
|
12 V
|
· Lead interruption
between plug connection X 6/Ter. 11 and control unit K 50/Ter. 25
· Control unit K 50
defective
|
|
Only applies to ASTRA-F with ABS-2EH:
|
|
|
|
· Ignition ON
Actuate brake
|
Left and right brake lamps illuminate
|
· If nominal value
is attained, continue at next trouble-shooting section
· Fuse F 28
defective
· Lead interruption
between fuse F 28 and brake lamp switch S 8
· Brake lamp switch
S 8 defective
· Lead interruption
between brake lamp switch S 8 and plug connection X 6/Ter. 15
· Lead interruption
between plug connection X 6/Ter. 15 and brake lamps
|
|
· Ignition OFF
Remove plug from control unit U 4.8
Connect voltmeter between
with
ETC :X 90/Ter. 23
without
ETC :X 89/Ter. 9
and ground
Ignition ON
Actuate brake
|
|
|
|
|
12 V
|
· Lead interruption
between plug connection X 6/Ter. 15 and control unit
with ETC: X
90/Ter. 23 without ETC: X 89/Ter. 9
· Control unit U 4.8
defective
|
|
Only applies to VECTRA/CAVALIER and CALIBRA with ABS-2EH:
|
|
|
|
· Ignition ON
Actuate brake
|
Left and right brake lamps illuminate
|
· If nominal value
is attained, continue at next trouble-shooting section
· Fuse F 8 defective
· Lead interruption
between fuse F 8 and brake lamp switch S 8
· Brake lamp switch
S 8 defective
· Lead interruption
between brake lamp switch S 8 and plug connection X 89/Ter. 9
· Lead interruption
between plug connection X 89/Ter. 91and brake lamps
|
|
· Ignition OFF
Remove plug from control unit U 4.8 Connect voltmeter
between X 89/Ter. 9 and ground
Ignition ON
Actuate brake
|
|
|
|
|
12 V
|
· Control unit 4.8
defective
|
|
|
|
|
|
|
|
|
