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Home >> Suzuki >> 2006 >> Grand Vitara Premium, RWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine General Information And Diagnosis) >> General Description >> OBD System Description - Fuel System Monitor >> DTC Description/Detecting Condition/Confirmation Procedure >> Fuel System Monitor
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Fuel System Monitor

WARNING: This page is about a different car, the 2007 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

Operation

FUEL SYSTEM MONITOR OPERATION TABLE

DTCs P0171 (for bank 1), P0174 (for bank 2)
P0172 (for bank 1), P0175 (for bank 2)
Monitor execution Continuous
Sensors / components OK Phase 1: CKP sensor, IAT sensor, MAP sensor, A/F sensor heater, EGR system, CMP sensor
Phase 2: CMP sensor, Barometric pressure sensor, A/F sensor, A/F sensor heater
Monitoring Duration 20 sec. (Phase 1), 30 sec. (Phase 2)
FUEL SYSTEM MONITOR OPERATION TABLE

DTCs P2096 (for bank 1), P2098 (for bank 2)
P2097 (for bank 1), P2099 (for bank 2)
Monitor execution Continuous
Sensors / components OK Fuel system, A/F sensor, A/F sensor heater, HO2S, HO2S heater, MAF sensor, IAT sensor, Barometric pressure sensor, ECT sensor, VSS, CMP sensor, CMP sensor
Monitoring Duration 10 sec.
ENABLE CONDITIONS TABLE

Parameter Minimum Maximum
Phase 1 (Fuel trim value) 
Fuel system status Closed loop mode
Engine coolant temp. 30°C (86°F) -
Engine speed 500 r/min -
Engine load No load -
MAF sensor range check Normal condition or not monitored
ECT sensor range check Normal condition or not monitored
Back-up power Normal condition or not monitored
BARO sensor range check Normal condition or not monitored
Primary A/F sensor voltage Normal condition or not monitored
Fuel tank pressure sensor range check Normal condition or not monitored
TP sensor range check Normal condition or not monitored
Phase 2 (Lambda feedback status) 
Engine coolant temp. 20°C (68°F) -
Intake air temp. -10°C (14°F) 80°C (176°F)
Engine load Level load
Barometric pressure 75 kPa -
Engine speed 500 r/min -
Time from engine start 120 sec. -
ECT sensor range check Normal condition or not monitored
IAT sensor range check Normal condition or not monitored
TP sensor range check Normal condition or not monitored
Secondary HO2S voltage (P0171, P0174) 0.5 V -
Secondary HO2S voltage (P0172, P0175) - 0.5 V
P2096, P2097, P2098, P2099 
Secondary O2 system status Closed loop mode -
Fuel enrichment Not activated -
Deviation between target and measured A/F -1.7 1.7
Engine load 5.3 - 85.1% (according to engine speed) -

Typical malfunction thresholds

TYPICAL MALFUNCTION THRESHOLDS TABLE

Phase 1 (Fuel trim value) 
P0171, P0174 
Long + short term fuel trim > 27%
P0172, P0175 
Long + short term fuel trim < -29%
TYPICAL MALFUNCTION THRESHOLDS TABLE

Phase 2 (Lambda feedback status) 
P0171, P0174 
Lambda feedback factor is sticking at lean limit.
P0172, P0175 
Lambda feedback factor is sticking at rich limit.
P2096, P2098 
Sum of correction factor for A/F sensor feedback > 600 g/min
P2097, P2099 
Sum of correction factor for A/F sensor feedback < -600 g/min