Honda Accord: Warm Up TWC Removal/Installation
1. Raise the vehicle on a lift.
2. Remove the secondary H02S (Sensor 2) (see page 11-197).
3. Remove the bolts (A).

4. Remove the WU-TWC bracket (B).
5. Lower the vehicle.
6. Remove the frame brace (see page 20-306).
7. Remove the A/F sensor (Sensor 1) (see page 11-197).
8. Remove the upper converter cover (A).

9. Remove the WU-TWC (B) and the gaskets (C).
10. Remove the converter cover (A).

11. Install the parts in the reverse order of removal with new gaskets.
DTC Troubleshooting
DTC P0420: Catalyst System Efficiency Below
Threshold
NOTE:
- Before you troubleshoot, record all freeze data and
any on-board snapshot, and review the general
troubleshooting information (see pa ...
Under-floorTWC Removal/Installation
1. Raise the vehicle on a lift.
2. Remove the exhaust pipe hangers (A).
3. Remove the under-floor TWC (B).
4. Install the parts in the reverse order of removal with
new gaskets (C) and new s ...
See also:
Quarter Glass Replacement
2-door
NOTE:
- Put on gloves to protect your hands.
- Wear eye protection when removing the glass with
piano wire.
- Use seat covers to avoid damaging any surfaces.
- The quarter glass cli ...
Security Hood Switch Test
1. Open the hood.
2. Disconnect the 2P connector from the security hood
switch.
3. Check for continuity between the terminals.
• There should be continuity between terminals No. 1
and ...
Changing the Engine Oil and Oil Filter
You must change the engine oil and oil filter regularly in order to maintain
the
engine's lubrication. The engine may be damaged if they are not changed
regularly.
Change the oil and filter in ...