Honda Accord 2008 Manual page 1887

07/11/02 09:40:01 61TA0000_210_0023
Heating/Air Conditioning
DTC Troubleshooting (cont'd)
DTC indicator 4:
Control Motor Circuit
4-door with M/T, 2-door
1. Turn the ignition switch to LOCK (0) and then to
ON (II).
2. Do the self-diagnostic function with the HVAC
control unit (see page 21-9).
3. Check for DTCs.
Is DT C 4 indicated?
−
YES Go to step 4.
NO − Intermittent failure; check for loose wires or
poor connections on the mode control motor
circuit.
4. Turn the ignition switch to LOCK (0).
5. Test the mode control motor (see page 21-54).
Is the mode control motor OK ?
−
YES Go to step 6.
NO − Replace the mode control motor (see page
21-55).
6. Disconnect the mode control motor 7P connector.
7. Disconnect the HVAC control unit 24P connector.
21-22
An Open in the Mode
8. Check for continuity between the following
terminals of the HVAC control unit 24P connector
and the mode control motor 7P connector.
24P: 7P:
No. 13 No. 5
No. 15 No. 7
No. 16 No. 3
HVAC CONTROL UNIT 24P CONNECTOR
Wire side of female terminals
BLK RED LT GRN
RED
MODE CONTROL MOTOR 7P CONNECTOR
Wire side of female terminals
Is there continuity?
YES − Check for loose wires or poor connections at
the HVAC control unit 24P connector and at the
mode control motor 7P connector. If the
connections are good, substitute a known-good
HVAC control unit and recheck. If the symptom/
indication goes away, replace the original HVAC
control unit.
NO − Repair open in the wire(s) between the HVAC
control unit and the mode control motor.
ＴＡ０８ＡＨＧＫ７３３０００８１０４０ＦＡＡＴ００
BLK
WHT
＊０１