Dtc Table; Fail-Safe Function Table - Suzuki kq750 Service Manual

1A-19 Engine General Information and Diagnosis:

DTC Table

Code
C00 None
C12 (P0335)
Crankshaft position sensor (CKP sensor)
(Page 1A-24)
C13 (P0105-H/L)
Intake air pressure sensor (IAP sensor)
(Page 1A-27)
C14 (P0120-H/L)
Throttle position sensor (TP sensor)
(Page 1A-34)
C15 (P0115-H/L) Engine coolant temperature sensor (ECT
(Page 1A-41) sensor)
C20 (P1752)
Differential lock relay (Diff-lock relay)
(Page 1A-47)
C21(P0110-H/L)
Intake air temperature sensor (IAT sensor)
(Page 1A-49)
C23 (P1651-H/L)
Tip-over sensor (TO sensor)
(Page 1A-53)
C24 (P0351)
Ignition signal (Ignition coil)
(Page 1A-59)
C32 (P0201)
Injector signal (FI)
(Page 1A-59)
C40 (P0505)
Idle speed control valve (ISC valve)
(Page 1A-59)
C41 (P0230-H/L)
Fuel pump control system (FP relay)
(Page 1A-59)
In the LCD (DISPLAY) panel, the malfunction code is indicated from small code to large code.
*1
To get the proper signal from the throttle position sensor, the sensor basic position is indicated in the LCD (DISPLAY)
panel. The malfunction code is indicated in three difgits. In front of three digits, a line appears in any of the position,
upper, middle or lower line. If the indication is upper or lower line when engine rpm is 1 300 rpm, slightly turn the
throttle position sensor and bring the line to middle.
In the normal condition, the throttle valve stop screw pushes throttle valves slightly, and indication point is middle line.

Fail-Safe Function Table

FI system is provided with fail-safe function to allow the engine to start and the motorcycle to run in a minimum
performance necessary even under malfunction condition.
Item
IAP sensor
TP sensor
ECT sensor
IAT sensor
Diff-lock relay
The engine can start and can run even if the above signal is not received from each sensor. But, the engine running
condition is not complete, providing only emergency help (by fail-safe circuit). In this case, it is necessary to bring the
vehicle to the workshop for complete repair.
Malfunction Part
Fail-Safe Mode
Intake air pressure is fixed to 101 kPa (760
mmHg).
The throttle opening is fixed to full open
position.
Ignition timing is also fixed.
Engine coolant temperature value is fixed to
80 °C (176 °F).
Intake air temperature value is fixed to 40 °C
(104 °F).
Differential position signal is fixed to neutral
gear.
Remarks
No defective part
Pick-up coil signal, signal generator
*1
Fuel pump, Fuel pump relay
Starting Ability
"YES"
"YES"
"YES"
"YES"
"YES"
B831G21104006
B831G21104007
Running Ability
"YES"
"YES"
"YES"
"YES"
"YES"