Dtc P0136 Ho2S (Bank-1 Sensor-2) Circuit Malfunction - Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual

DTC P0136 HO2S (Bank-1 Sensor-2) Circuit Malfunction

WIRING DIAGRAM
[A] : Terminal arrangement of ECM (PCM) coupler viewed from harness side
1. HO2S heater relay
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
Maximum HO2S voltage is higher than 2.0 V for 20 sec.
Maximum HO2S voltage is less than 0.35 V for 8 min.
Maximum HO2S voltage is higher than 2.5 V for 4 sec. while
fuel is cut.
DTC CONFIRMATION PROCEDURE
NOTE:
Check to make sure that following conditions are satisfied when using this DTC CONFIRMATION PRO-
CEDURE.
ENGINE GENERAL INFORMATION AND DIAGNOSIS (H25 ENGINE) 6-1-79
2. HO2S 4. "IG COIL" fuse
3. Main fuse
HO2S
HO2S circuit
Fuel injector
Fuel pressure control system
ECM (PCM)
TROUBLE AREA