Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : 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 .
NO : Repair an open in the TW wire between the PCM (B34) and ECT sensor 1, 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
P0118 ECT SENSOR 1 CIRCUIT HIGH VOLTAGE
Is DTC P0118 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 REMOVAL AND INSTALLATION or PCM UPDATE , 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 P0122: TP SENSOR A CIRCUIT LOW VOLTAGE
Fig. 42: DTC Troubleshooting Flow Chart (P0122)
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
P0122 TP SENSOR A CIRCUIT LOW VOLTAGE
1. Problem verification:
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1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or
HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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3. Check the parameter(s) below with the HDS.
Threshold
Values Unit Values
TP SENSOR A Less than 0.3 V
Current conditions
Signal
Unit
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
the throttle body and the PCM.
2. Determine possible failure area (VCC3 line, TH 1 line):
ο‘
1. Check for Pending or Confirmed DTCs with the HDS.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P0122 TP SENSOR A CIRCUIT LOW
VOLTAGE
P0222 TP SENSOR B CIRCUIT LOW
VOLTAGE
Are DTC P0122 and P0222 indicated at the same time?
YES : Go to step 4.
NO : Go to step 3.
3. Shorted wire check (TH 1 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 connectors.
PCM connector C (49P)
Throttle body 6P connector
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4. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
PCM connector C (49P): disconnected
Throttle body 6P connector: disconnected
Test circuit TH 1
Test point 1 Throttle body 6P connector No. 6 (LT GRN)
Test point 2 Body ground
Fig. 43: Checking Continuity Between Throttle Body 6P Connector No. 6 (LT GRN) And
Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : Repair a short in the TH 1 wire between the PCM (C30) and the throttle body, then do the repair
verification .
NO : The TH 1 wire is OK. Update the PCM See PCM UPDATE or PCM REMOVAL AND
INSTALLATION 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 .
4. Determine possible failure area (VCC3 line, throttle body):
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1. Turn the ignition switch to LOCK (0).
2. Disconnect the following connector.
Throttle body 6P connector
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3. Turn the ignition switch to ON (II).
4. Measure the voltage between test points 1 and 2.
Test condition IG ON (II)
Throttle body 6P connector: disconnected
Test circuit VCC3(ETCS)
Test point 1 Throttle body 6P connector No. 5 (TAN)
Test point 2 Body ground
Fig. 44: Measuring Voltage Between Throttle Body 6P Connector No. 5 (TAN) And Body
Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there about 5.0 V?
YES : Replace the throttle body See THROTTLE BODY REMOVAL AND INSTALLATION ,
THROTTLE BODY DISASSEMBLY AND REASSEMBLY or THROTTLE BODY CLEANING ,
then do the repair verification .
NO : Go to step 5.
5. Open wire check (VCC3(ETCS) 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 C (49P)
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4. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Throttle body 6P connector: disconnected
PCM connector C (49P): disconnected
Test circuit VCC3(ETCS)
Test point 1 PCM connector C (49P) No. 22 (TAN)
Test point 2 Throttle body 6P connector No. 5 (TAN)
Fig. 45: Checking Continuity Between PCM Connector C (49P) No. 22 (TAN) And Throttle
Body 6P Connector No. 5 (TAN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The VCC3(ETCS) 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 .
NO : Repair an open in the VCC3(ETCS) wire between the PCM (C22) and the throttle body, then do the
repair verification .
REPAIR VERIFICATION
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1. Turn the ignition switch to LOCK (0).
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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 .
ο‘
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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
P0122 TP SENSOR A CIRCUIT LOW VOLTAGE
Is DTC P0122 indicated?
YES : Check for poor connections or loose terminals at the throttle body and the PCM. If the PCM was
updated, substitute a known-good PCM See PCM REMOVAL AND INSTALLATION or PCM
UPDATE , 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 UPDATE
or PCM REMOVAL AND INSTALLATION . If any other Pending or Confirmed DTCs are indicated, go to
the indicated DTC's troubleshooting.
DTC P0123: TP SENSOR A CIRCUIT HIGH VOLTAGE
2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual
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2015 Honda CR-V Owner's Manual
