Honda Accord 2008 Manual page 415

07/11/02 09:03:21 61TA0000_110_0096
PGM-FI System
DTC Troubleshooting (cont'd)
DTC P0135: A/F Sensor (Sensor 1) Heater
Circuit Malfunction
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at
3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
4. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P0135 indicated?
−
YES Go to step 5.
NO − Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the A/F sensor (Sensor 1), the PGM-FI subrelay,
and the ECM/PCM.
5. Turn the ignition switch to LOCK (0).
6. Check the No. 14 FI SUB (15 A) fuse in the under-
hood fuse/relay box.
Is the f use OK ?
YES − Go to step 7.
NO − Go to step 19.
11-96
7. Remove the PGM-FI subrelay (A) from the under-
hood fuse/relay box.
A
8. Test the PGM-FI subrelay (see page 22-91).
Is the relay OK ?
−
YES Go to step 9.
NO − Replace the PGM-FI subrelay, then go to step
24.
9. Disconnect the A/F sensor (Sensor 1) 4P connector.
10. At the sensor side, measure resistance between A/F
sensor (Sensor 1) 4P connector terminals No. 3 and
No. 4.
A/F SENSOR (SENSOR 1) 4P CONNECTOR
＋ B
Terminal side of male terminals
Is there 2.0 2.7 − at room temperature?
YES − Go to step 11.
−
NO Go to step 23.
ＴＡ０８ＡＥＡＫ７２１０００９０１３５ＦＡＡＴ３０
AFSHTC
＊０１
＊０２