Honda Accord 2008 Manual page 1979

07/11/02 09:43:17 61TA0000_210_0115
Climate Control
DTC Troubleshooting (cont'd)
20. While checking the same terminal for voltage to
ground, reconnect these items individually and
note the voltage reading each time:
• Driver's air mix control motor
• Passenger's air mix control motor
• Recirculation control motor
• Mode control motor
＊０７
CLIMATE CONTROL UNIT CONNECTOR B (12P)
Does the voltage remain at about 5 volts?
YES
and recheck. If the symptom/indication goes away,
replace the original climate control unit.
NO −
voltage drop.
21-114 21-114
BLK
Wire side of female terminals
− Substitute a known-good climate control unit
Replace the component that caused the
DTC B1220 or DTC indicator L and A/C ON:
Short in the Recirculation Control Motor
Circuit
1. Clear the DTC with the HDS.
2. Turn the ignition switch to LOCK (0) and then to
ON (II).
3. Do the self-diagnostic function with the HDS
(see page 21-87) or climate control unit (see page
21-88).
4. Check for DTCs.
Is DT C B1220 or L and A/ C ON indicated?
YES − Go to step 5.
NO − Intermittent failure.
5. Check for DTCs.
Are these DT Cs also present; B121B or H and A/ C
ON, and/ or B1234 or B and A/ C ON, and/ or B1237
or E and A/ C ON?
−
YES Go to step 13.
NO − Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Test the recirculation control motor (see page
21-163).
Is the recirculation control motor OK ?
−
YES Go to step 8.
NO − Replace the recirculation control motor
(see page 21-57).
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A