Saab 9000 - Page 213

21 O Fault diagnosis
Diagnostic trouble codes- P1576, P1577
Brake
light switch
Symptom of
fault
The CHECK ENGINE lamp
(MIL)
is on. Only basic
boost pressure.
Conditions
Engine running
Braking 6 times from 22 to
O
mph (35 to
O
km/h).
Each brake application shorter than 10 seconds.
No status change on the input from the brake light
switch.
P1576: Short circuit to battery positive {B+).
· P15TT:
Short
circuit to ground/open circuit
J32
,-
-,
I
1
I
I · I
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29
. 15
Diagnostic help
589
µp
the status
("ON/OFF")
of
the brake light switch can
be ascertained by means of the ISAT scan tool.
- Select "ON/OFF".
- Select "BRAKE LIGHT SWITCH".
Saab9000