Dtc P0136 Ho2S-2 (Bank 1) Circuit Malfunction - Suzuki GRAND VITARA XL-7 Owner's Manual

DTC P0136 HO2S-2 (Bank 1) Circuit Malfunction

WIRING DIAGRAM
1. HO2S heater relay
2. ECM (PCM)
3. HO2S-2 (Bank-1)
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
DTC will set when any one of following conditions is detected (2 driving
cycle detection logic).
• 4.5 V or more HO2S circuit voltage is detected when 5 V power is con-
nected to HO2S circuit in ECM (PCM).
• While running with A/F feed back, average output voltage during speci-
fied time is too high or too low.
or
• While running with A/F feed back, max output voltage during specified
time is lower than specified value or min. output voltage during speci-
fied time is higher than specified value.
DTC CONFIRMATION PROCEDURE
WARNING:
• When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.
ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE) 6-1-63
TROUBLE AREA
• HO2S-2 or its circuit
• Fuel system
• ECM (PCM)