Honda HR-V: Description
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Warm Up Three Way Catalytic Converter (WU-TWC), Under-Floor Three Way
Catalytic Converter
(Under-Floor TWC)
The warm up three way catalytic converter (WU-TWC) and the under-floor three
way catalytic
Overview
The electronic throttle control system (ETCS) opens and closes the throttle
valve by electronic control. This
system consists of a throttle actuator built into the throttle body, throttle
v
FUEL FILL CAP
FUEL TANK VAPOR/LIQUID
SEPARATION VALVE
FUEL TANK
FUEL PRESSURE REGULATOR
FUEL PUMP
FUEL FILTER
AIR FUEL RATIO (A/F) SENSOR
(SENSOR 1)
WARM UP THREEWAY CATALYTIC
CONVERTER (
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NOTE: Before you troubleshoot, review the General Troubleshooting
Information.
1. Problem verification (with engine idling):
Turn the vehicle to the ON mode.
Clear the DTC with the HDS.
Start the engine.
Check for DTCs with the HDS.
Is DTC C1851-19 or C1851-1E indicated?
YES
The failure is
Procedure
NOTE: If you replace the keyless access control unit or steering lock, the
vehicle is not turned to the ON mode.
Follow the registration procedure of the corresponding unit.
1. Keyless Access System - Registration
NOTE:
Check for aftermarket electrical equipment that can cause problems