Honda ACCORD HYBRID 2005 Service Manual page 1602

Climate Control
D T C T r o u b l e s h o o t i n g ( c o n t ' d )
DTC B1225 or DTC indicator A: A n Open in
the In-car Temperature Sensor Circuit
1. Clear the DTC by t u r n i n g the ignition switch OFF,
and then ON (II).
2. Operate the climate control system in several
modes.
3. Check for DTCs using the HDS or self-diagnostic.
Is DTC B1225 or A indicated?
Y E S — G o t o step 4.
NO—Intermittent failure, check for loose wires or
poor connections on the in-car temperature sensor
circuit.H
4. Turn the ignition switch OFF.
5. Remove the in-car temperature sensor (see page
21-75), and test it (see page 21-75).
Is the in-car temperature sensor OK?
Y E S — G o t o step 6.
NO—Replace the in-car t e m p e r a t u r e sensor. •
6. Disconnect audio-HVAC display panel connector
A ( 2 2 P ) .
7. Check for continuity between the No. 11 terminal of
audio-HVAC display panel connector A (22P) and
the No. 1 terminal of the in-car temperature sensor
2P connector.
A U D I O - H V A C D I S P L A Y P A N E L C O N N E C T O R A (22P)
W i r e s i d e o f f e m a l e t e r m i n a l s
1
I
2 3 4 5 6 7 8 9 10
11 | 12 13
14
15
i e [ X ] i 7
18 19
20 21 22
G R Y
G R Y
I N - C A R T E M P E R A T U R E S E N S O R 2P C O N N E C T O R
W i r e s i d e o f f e m a l e t e r m i n a l s
Is there continuity?
YES—Go to step 8.
NO—Repair open in the w i r e between the audio-
HVAC display panel and the in-car temperature
sensor. •
8. Check for continuity between the No. 15 terminal of
audio-HVAC display panel connector A (22P) and
the No. 2 terminal of the in-car temperature sensor
2P connector.
A U D I O - H V A C D I S P L A Y P A N E L C O N N E C T O R A (22P)
W i r e s i d e o f f e m a l e t e r m i n a l s
1 2 3 4
5
x
6
7 8 9 10
22
11
12 13 14 15
18
[ X |
17
18 19 20 21
10
22
P U R
IN-CAR T E M P E R A T U R E S E N S O R 2P C O N N E C T O R
W i r e s i d e o f f e m a l e t e r m i n a l s
Is there continuity?
YES—Check for loose w i r e s or poor connections at
audio-HVAC display panel connector A (22P) and at
the in-car temperature sensor 2P connector. If the
connections are g o o d , substitute a k n o w n - g o o d
climate control unit, and recheck. If the s y m p t o m /
indication goes away, replace the original audio-
HVAC display panel. •
NO—Repair open in the w i r e between the audio-
HVAC display panel and the in-car temperature
sensor. •
21-32