Self-Diagnostic System; Priority / Code / Pattern For Self-Diagnostic System Operation - Suzuki DF 90 Service Manual

SELF-DIAGNOSTIC SYSTEM

The self-diagnostic system alerts the operator when an abnor-
mality occurs in a signal from sensor, switch, etc.
When the system is activated, the "CHECK ENGINE" lamp
flashes (lights intermittently) according to each code pattern
along with a buzzer sound.
When engine is running, the buzzer sounds a series of short
(0.2 sec.) beeps.
When engine is not running, the buzzer sounds according to
each code pattern, but not simultaneous with the lamp flash.
The buzzer sound, activated by the self-diagnostic system, can
be temporally canceled by pushing the ignition key in.
PRIORITY / CODE / PATTERN FOR SELF-DIAGNOSTIC SYSTEM OPERA-
TION
PRIORITY FAILED ITEM
1 MAP sensor 1
2
CKP sensor
IAC valve / By-pass air
3
screw adjustment
4 CMP sensor
5 CTP switch
6 Cylinder temp. sensor
7 IAT sensor
MAP sensor 2
8
(Pressure detect passage)
Rectifier & regulator
9
(Over-charging) [NOTE1]
Exhaust manifold
10
temp. sensor
11 Fuel injector
CODE LAMP FLASHING PATTERN
on
3 – 4
off
on
4 – 2
off
on
3 – 1
off
on
2 – 4
off
on
2 – 2
off
on
1 – 4
off
on
2 – 3
off
on
3 – 2
off
on
1 – 1
off
on
1 – 5
off
on
4 – 3
off
ENGINE CONTROL SYSTEM
MONITOR-TACHOMETER
"CHECK ENGINE" lamp
FAIL-SAFE SYSTEM
ACTIVE
YES
YES
NO
YES
NO
YES
YES
NO
NO
YES
NO
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