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:
Features
This chapter describes how to operate technology features. ...
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 ...
WiperA/Vasher Switch
Test / Replacemen
1. Remove the steering column covers {see page
20-181).
2. Disconnect the dashboard wire harness 8P connector
(A) from the wiper/washer switch (B).
3. Remove the two screws, then slide out the ...