Fail-Safe Table - Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual

Fail-Safe Table

When any of the following DTCs is detected, ECM (PCM) enters fail-safe mode as long as malfunction continues
to exist but that mode is canceled when ECM detects normal condition after that.
DTC NO. TROUBLE AREA
P0100
MAF SENSOR
(No.33, 34)
P0110
IAT SENSOR
(No.23, 25)
P0115
ECT SENSOR
(No.14, 15)
P0120
TP SENSOR
(No.21, 22)
P0500 VEHICLE SPEED SEN-
(No.24) SOR
BAROMETRIC PRES-
P1450
SURE SENSOR
P0705
TR SWITCH
(No.72)
OUTPUT SPEED SEN-
P0720
SOR CIRCUIT MAL-
(No.75)
FUNCTION
P0753
SHIFT SOLENOID A (#1)
(No.61, 62)
P0758
SHIFT SOLENOID B (#2)
(No.63, 64)
P0743 TCC (Lock-up) SOLE-
(No.65, 66) NOID
ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16/J20 ENGINES) 6-21
FAIL SAFE OPERATION
• Injector drive time (fuel injection volume) is determined accord-
ing to throttle valve opening and engine speed.
• EGR valve stops.
• Air flow of IAC valve is limited.
Each control is performed on the basis of 21.8°C (71.2°F) intake
air temp.
• Each control except 4-A/T is performed on the basis of 30.1°C
(86.2°F) engine coolant temp.
• 4-A/T control is performed assuming 31°C (87.8°F) (engine
warmed up) or higher after 15 min. from engine start.
• Each control except 4-A/T is performed on the basis of 124.5°
throttle valve opening.
• 4-A/T control is performed on the basis of 0° throttle valve open-
ing.
Air flow of IAC valve is limited.
Each control is performed based on 760 mmHg barometric pres-
sure.
A/T control is performed in priority order of L, 2, N, D, R and P.
A/T control is performed by using signal from VSS.
• A/T control using 3rd gear is performed when D range, 1st, or
2nd gear is used.
• TCC solenoid OFF
• A/T control using 4th gear is performed when D range, 2nd or
3rd gear is used.
• When both shift solenoids A (#1) and B (#2) failed simulta-
neously, A/T control using 4th gear is always performed in D
range.
• TCC solenoid OFF
TCC (Lock-up) solenoid OFF