Honda Odyssey 2004. Manual — part 398
Displaying Sensor Inputs at the Climate Control Unit
Check these items before using the sensor input display mode
To run the sensor input display mode, follow these steps
21-68
Climate Control
General Troubleshooting Information (cont’d)
The climate control unit has a mode that displays sensor inputs it receives. This mode shows you what the climate
control unit is receiving from each of the sensors, one at a time, and it can help you determine if a sensor is faulty.
1. Turn the ignition switch ON (II), and check the recirculation door function; press the recirculation button to switch
from FRESH to RECIRC. The air volume and sound should change slightly.
2. Set the temperature control knob to the desired test temperature. When selecting the test temperatures, note
these items:
• ‘‘Lo’’ temperature setting will default to MAX COOL, VENT, and RECIRC.
• ‘‘Hi’’ temperature setting will default to MAX HOT, FLOOR, and FRESH.
• 61 through 89°F settings will use the automatic climate control logic.
3. Turn the ignition switch OFF.
1. Turn the ignition switch OFF.
2. Press and hold both the AUTO and RECIRC buttons, then start the engine.
3. After the engine starts, release the buttons. The climate control display will flash the sensor number and then the
value for that sensor. Record the value displayed.
03/07/29 10:12:06 61S0X050_210_0069
With navigation system:
Without navigation system:
21-69
4. To advance to the next sensor, press the rear window defogger button.
Sensor
Item
Displayed Value
1
In-car Temperature Sensor
°C
2
Ambient Temperature
°C
3
Solar Radiation Sensor Value: Dark = 00, Flashlight = 04, Cloudy =10,
Sunny =65
Kcal/m2·h
4
Engine coolant Temperature
°C
5
Evaporator Outlet Air Temperature
°C
6
Air Mix Opening (Low value indicates cooler air distribution, higher
value indicates warmer air distribution)
% of opening
7
Vent Temperature Air Out (TAO)
°C
Sensor
Item
Displayed Value
1
Mode Motor Position
See mode motor
position display
2
In-car Temperature Sensor
°C
3
Ambient Temperature
°C
4
Solar Radiation Sensor Value: Dark = 00, Flashlight = 04, Cloudy =10,
Sunny =65
Kcal/m2·h
5
Engine coolant Temperature
°C
6
Evaporator Outlet Air Temperature
°C
7
Air Mix Opening (Low value indicates cooler air distribution, higher
value indicates warmer air distribution)
% of opening
8
Vent Temperature Air Out (TAO)
°C
NOTE:
• The sensor values will be displayed in degrees Celsius (°C) or an alphanumeric code. Use the chart to convert
the value to degrees Fahrenheit (°F).
• If the sensor value displays ‘‘Er’’ this indicates there is an open or short in the circuit or sensor. Run the self-
diagnosis function to check for a DTC.
• If necessary, compare the sensor input display to an alike, known-good vehicle under the same test conditions.
• If the sensor is out of the normal range, substitute the sensor with a known-good, and recheck.
5. To cancel the sensor input display mode, press the AUTO button, or turn the ignition off.
(cont’d)
03/07/29 10:12:06 61S0X050_210_0070
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
+
+
*01
*02
*03
*04
*05
Celsius to Fahrenheit Conversion Table
Celsius to Fahrenheit Conversion Table
Alphanumeric Conversion Table
21-70
Climate Control
General Troubleshooting Information (cont’d)
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
0
32
10
50
20
68
30
86
40
104
1
34
11
52
21
70
31
88
41
106
2
36
12
54
22
72
32
90
42
108
3
37
13
55
23
73
33
91
43
109
4
39
14
57
24
75
34
93
44
111
5
41
15
59
25
77
35
95
45
113
6
43
16
61
26
79
36
97
46
115
7
45
17
63
27
81
37
99
47
117
8
46
18
64
28
82
38
100
48
118
9
48
19
66
29
84
39
102
49
120
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
50
122
60
140
70
158
80
176
90
194
51
124
61
142
71
160
81
178
91
196
52
126
62
144
72
162
82
180
92
198
53
127
63
145
73
163
83
181
93
199
54
128
64
147
74
165
84
183
94
201
55
131
65
149
75
167
85
185
95
203
56
133
66
151
76
169
86
187
96
205
57
135
67
152
77
170
87
188
97
207
58
136
68
154
78
172
88
190
98
208
59
139
69
158
79
174
89
192
99
210
Display Reading
(Alphanumeric)
°C
°F
%
A1 thru A9
1 thru
9
30 thru 16
1 thru
9
B0 thru B9
10 thru
19
14 thru
2
10 thru
19
C0 thru C9
20 thru
29
4 thru
20
20 thru
29
D0 thru D9
30 thru
39
22 thru
38
30 thru
39
E0 thru E9
40 thru
49
40 thru
58
F0 thru F9
50 thru
59
58 thru
74
100 thru
109
VENT
HEAT/VENT
HEAT
HEAT/DEF
DEF
03/07/29 10:12:07 61S0X050_210_0071
Mode Motor Position Display (Without navigation system)
01
S0X4A10G10500000000GAAT00
DTC
(Temperature
Indicator
Segment)
Detection Item
Page
21-71
DTC Troubleshooting Index
C
E
B
D
F
M*
J
N
H
I
K
G
A
TEMPERATURE INDICATOR
L*
L*
1
2
1
To retrieve the DTC , you must run the self-diagnosis function (see page 21-67). In the case of multiple problems, the
respective Indicator segments will come on. If Indicator segments A, C, E, G, I, and L come on at the same time, there
may be an open circuit in the common ground wire of the sensors.
A
An open in the in-car temperature sensor circuit
(see page 21-80)
B
A short in the in-car temperature sensor circuit
(see page 21-81)
C
An open in the outside air temperature sensor circuit
(see page 21-82)
D
A short in the outside air temperature sensor circuit
(see page 21-85)
E
An open in the sunlight sensor circuit
(see page 21-86)
F
A short in the sunlight sensor circuit
(see page 21-88)
G
An open in the evaporator temperature sensor circuit
(see page 21-89)
H
A short in the evaporator temperature sensor circuit
(see page 21-91)
I
An open in the air mix control motor circuit
(see page 21-92)
J
A short in the air mix control motor circuit
(see page 21-93)
K
A problem in the air mix control linkage, door, or motor
(see page 21-95)
L
An open or short in the mode control motor circuit
(see page 21-96)
L
A problem in the mode control motor circuit
(see page 21-97)
M
A problem in the mode control linkage, doors, or motor
(see page 21-99)
N
A problem in the blower motor circuit
(see page 21-99)
1: Without Navigation System
2: With Navigation System
1
2
1
03/07/29 10:12:08 61S0X050_210_0072
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