Pilot V6-3.5L (2004)
Temperature Gauge: Testing and Inspection
Coolant Temperature Gauge Test
Coolant Temperature Gauge Needle Goes Past the Hot Mark:
1. Check for fuel and emissions related DTCs. If you find any, repair the problem, and clear the DTC before continuing.
2. Turn the ignition switch OFF, and disconnect PCM connector A (32P).
3. Turn the ignition switch ON (II), and watch the coolant temperature gauge.
Does the temperature gauge needle stay on the cold mark? (you may have to watch it for about 60 seconds.)
YES - Substitute a known-good PCM and recheck. If the symptom/indication goes away, replace the original PCM.
NO - Go to step 4.
4. Turn the ignition switch OFF, and disconnect gauge assembly 30P connector A.
5. Check for continuity between PCM connector terminal A31 and body ground.
Is there continuity?
YES - Repair short to ground between PCM connector A terminal 31 and gauge assembly 30P connector A terminal 29.
NO - Replace the gauge assembly.
Coolant Temperature Gauge Needle Does Not Move at ALL
1. Check for fuel and emissions-related DTCs. If you find any, repair the problem, and clear the DTC before continuing.
2. Turn the ignition switch OFF, and connect PCM 32P connector A terminal 31 to body ground with a jumper wire.
3. Turn the ignition switch ON (II).
After 60 seconds or more, does the temperature gauge needle move to the Hot side?
YES - Check connections. If OK, substitute a known-good PCM and recheck. If the symptom/indication goes away, replace the original PCM.B
NO - Go to step 4.
4. Turn the ignition switch OFF, and disconnect PCM connector A (32P).
