Sending Unit Test - Honda 2004 Odyssey Service Manual

5. Check for continuity between PCM connector
terminal A31 and gauge assembly connector
terminal C2.
PCM CONNECTOR A (32P)
(YEL/GRN)
GAUGE ASSEMBLY CONNECTOR C (16P)
Wire side of female terminals
Is there continuity?
YES Repair a short in the wire between PCM
connector A31 and gauge connector terminal C2.
NO Replace the fuel and temperature gauge
assembly.
ECTOUT
(YEL/GRN)

Sending Unit Test

1999-2000 models
1. Disconnect the YEL/GRN wire (A) from the coolant
temperature gauge sending unit (B).
C
2. Using an ohmmeter, measure the change in
resistance between the positive terminal (C) and
the engine (ground) with the engine cold and with
the engine at operating temperature.
Temperature 133°F (56°C)
Resistance ( )
3. If the obtained readings are substantially different
from the specifications above, replace the sending
unit.
A
B
185°F (85°C)
212°F (100°C)
137 46 30
10-9 10-9