ECT SENSOR 1
Does ECT SENSOR 1 change 18 Β°F (10 Β°C) or more?
YES : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
ECT sensor 1 and the PCM.
NO : The failure is duplicated. REPLACE ECT SENSOR 1 , then do the repair verification .
REPAIR VERIFICATION
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1. Turn the ignition switch to ON (II).
2. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS
SYSTEMS or HOW TO TROUBLESHOOT THE A/T SYSTEM .
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3. DO THE PCM IDLE LEARN PROCEDURE .
4. Check for Pending or Confirmed DTCs with the HDS.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P0116 ECT SENSOR 1 CIRCUIT
RANGE/PERFORMANCE PROBLEM
Is DTC P0116 indicated?
YES : Check for poor connections or loose terminals at ECT sensor 1 and the PCM, then go to step 1.
NO : Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated
DTC's troubleshooting.
DTC P0117: ECT SENSOR 1 CIRCUIT LOW VOLTAGE
Fig. 35: DTC Troubleshooting Flow Chart (P0117)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and
review the general troubleshooting information See HOW TO TROUBLESHOOT
THE A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS
SYSTEMS .
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P0117 ECT SENSOR 1 CIRCUIT LOW VOLTAGE
1. Problem verification:
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1. Turn the ignition switch to ON (II).
2. Check the parameter(s) below with the HDS.
Threshold
Values
Current conditions
Unit Values Unit
Signal
ECT SENSOR 1 Less than 0.08 V
Do the current condition(s) match the threshold?
YES : The failure is duplicated. Go to step 2.
NO : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
ECT sensor 1 and the PCM.
2. ECT sensor 1 performance check:
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1. Turn the ignition switch to LOCK (0).
2. Disconnect the following connector.
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ECT sensor 1 2P connector
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3. Turn the ignition switch to ON (II).
4. Check the parameter(s) below with the HDS.
Threshold
Values
Current conditions
Unit Values Unit
Signal
ECT SENSOR 1 Less than 0.08 V
Do the current condition(s) match the threshold?
YES : Go to step 3.
NO : REPLACE ECT SENSOR 1 , then do the repair verification .
3. Shorted wire check (TW line):
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1. Turn the ignition switch to LOCK (0).
2. Jump the SCS line with the HDS.
3. Disconnect the following connector.
PCM connector B (49P)
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4. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
ECT sensor 1 2P connector: disconnected
PCM connector B (49P): disconnected
Test circuit TW
Test point 1 ECT sensor 1 2P connector No. 2 (PNK)
Test point 2 Body ground
Fig. 36: Checking Continuity Between ECT Sensor 1 2P Connector No. 2 (PNK) And Body
Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : Repair a short in the TW wire between the PCM (B34) and ECT sensor 1, then do the repair
verification .
NO : The TW wire is OK. Update the PCM See PCM REMOVAL AND INSTALLATION or PCM
UPDATE if it does not have the latest software, or substitute a known-good PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE , then do the repair verification .
REPAIR VERIFICATION
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1. Turn the ignition switch to LOCK (0).
2. Reconnect all connectors.
3. Turn the ignition switch to ON (II).
4. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW
TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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5. DO THE PCM IDLE LEARN PROCEDURE .
6. Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P0117 ECT SENSOR 1 CIRCUIT LOW VOLTAGE
Is DTC P0117 indicated?
YES : Check for poor connections or loose terminals at ECT sensor 1 and the PCM. If the PCM was updated,
substitute a known-good PCM See PCM UPDATE or PCM REMOVAL AND INSTALLATION , then
recheck. If the PCM was substituted, go to step 1.
NO : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE . If any other Pending or Confirmed DTCs are
indicated, go to the indicated DTC's troubleshooting.
DTC P0118: ECT SENSOR 1 CIRCUIT HIGH VOLTAGE
2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual
2018 Honda CR-V Owner's Manual
2015 Honda CR-V Owner's Manual
