Honda 2004 Odyssey Service Manual page 289

Cooling System
Coolant Temperature Gauge Test (cont'd)
4. Connect the negative cable to the battery. Turn the
ignition switch ON (II), and measure voltage
between PCM connector terminal E14 and body
ground.
PCM CONNECTOR E (31P)
Wire side of female terminals
Is there about 5 V ?
YES Replace the fuel and temperature gauge
assembly.
NO Go to step 5.
5. Turn the ignition switch OFF, and check for
continuity between PCM connector terminal E14
and gauge assembly connector terminal C2.
PCM CONNECTOR E (31P)
(YEL/GRN)
GAUGE ASSEMBLY CONNECTOR C (16P)
Wire side of female terminals
Is there continuity?
YES Replace the fuel and temperature gauge
assembly.
NO Repair an open in the wire between PCM
connector terminal E14 and gauge connector
terminal C2.
10-6
ECTOUT
(YEL/GRN)
ECTOUT
(YEL/GRN)
Coolant Temperature Gauge Needle Does
Not Move at All - 2002-2004 models
1. Turn the ignition switch OFF, and connect
powertrain Control Module (PCM) connector
terminal A31 to body ground with a jumper wire.
PCM CONNECTOR A (32P)
Wire side of female terminals
2. Turn the ignition switch ON (ll).
Af ter 30 seconds or more, does the temperature
gauge needle move to the hot side?
YES Substitute a known-good PCM and recheck
(see page 11-5). If the symptom/indication goes
away, replace the original PCM (see page 11-4).
NO Go to step 3.
3. Turn the ignition switch OFF, and disconnect the
negative cable from the battery. Then disconnect
PCM connector A (32P).
ECTOUT
(YEL/GRN)