Is DTC P16E4 indicated?
YES : Replace the alternator See ALTERNATOR OVERHAUL or ALTERNATOR REMOVAL
AND INSTALLATION .
NO : Check the cause of the high temperature, and repair it.
DTC P2101: ETCS MALFUNCTION
Fig. 340: DTC Troubleshooting Flow Chart (P2101)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
CAUTION: Do not insert your fingers into the installed throttle body when you turn
the ignition switch to ON (II), or while the ignition switch is in ON (II). If you
do, you will seriously injure your fingers if the throttle valve is activated.
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
P2101 ETCS MALFUNCTION
1. ETCS system check:
ο‘
ο‘
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 .
ο‘
ο‘
3. Do the ETCS TEST with the HDS.
4. Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P2101 ETCS MALFUNCTION
Is DTC P2101 indicated?
YES : The failure is duplicated. Go to step 3.
NO : The failure is not duplicated. Go to step 2.
2. Problem verification:
ο‘
1. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
ο¬
ο¬
ο¬
ENGINE SPEED
VEHICLE SPEED
APP SENSOR
Current conditions
Values Unit
Signal
ENGINE SPEED
VEHICLE SPEED
APP SENSOR
ο‘
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P2101 indicated?
YES : The failure is duplicated. Go to step 3.
NO : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
the throttle body and the PCM.
3. Determine possible failure area (throttle body, others):
ο‘
ο‘
ο‘
ο‘
1. Turn the ignition switch to LOCK (0).
2. Disconnect the intake air duct from the throttle body.
3. Turn the ignition switch to ON (II).
4. Clear the DTC with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or
HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
ο‘
5. Visually check the throttle valve operation while doing the ETCS TEST in the INSPECTION
MENU with the HDS.
Does the throttle valve operate smoothly?
YES : Clean the throttle body See THROTTLE BODY DISASSEMBLY AND REASSEMBLY ,
THROTTLE BODY CLEANING or THROTTLE BODY REMOVAL AND INSTALLATION ,
then do the repair verification . If DTC P2101 is indicated, replace the throttle body See
THROTTLE BODY DISASSEMBLY AND REASSEMBLY , THROTTLE BODY REMOVAL
AND INSTALLATION or THROTTLE BODY CLEANING , then do the repair verification .
NO : Go to step 4.
4. Open wire check (MTR1 line, MTR2 line):
ο‘
ο‘
ο‘
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
ο‘
4. Connect terminals A and B with a jumper wire.
Terminal A Throttle body 6P connector No. 1 (PNK)
Terminal B Throttle body 6P connector No. 2 (GRN)
Fig. 341: Connecting Wire Between Throttle Body 6P Connector No. 1 (PNK) And No. 2
(GRN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
ο‘
5. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
PCM connector C (49P): disconnected
Throttle body 6P connector: disconnected
Throttle body 6P connector No. 1 and No. 2: jumped
Test circuit MTR1, MTR2
Test point 1 PCM connector C (49P) No. 3 (GRN)
Test point 2 PCM connector C (49P) No. 4 (PNK)
Fig. 342: Checking Continuity Between PCM Connector C (49P) No. 3 (GRN) And No. 4
(PNK)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The MTR1 and MTR2 wires are OK. Go to step 5.
NO : Repair an open in the MTR1 wire or MTR2 wire between the PCM (C3, C4) and the throttle body,
then do the repair verification .
5. Throttle body internal circuit check:
ο‘
1. At the throttle body side, measure the resistance between test points 1 and 2.
Test condition IG LOCK (0)
PCM connector C (49P): disconnected
Throttle body 6P connector: disconnected
Test circuit MTR1, MTR2
Test point 1 Throttle body 6P connector No. 1 (throttle body side)
Test point 2 Throttle body 6P connector No. 2 (throttle body side)
Fig. 343: Measuring Resistance Between Throttle Body 6P Connector No. 1 And No. 2
(Throttle Body Side)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there about 1.0 kohms or more?
YES : Replace the throttle body See THROTTLE BODY DISASSEMBLY AND REASSEMBLY ,
THROTTLE BODY REMOVAL AND INSTALLATION or THROTTLE BODY CLEANING ,
then do the repair verification .
NO : The throttle body internal circuit 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 UPDATE or PCM REMOVAL AND INSTALLATION , then do the repair
verification .
REPAIR VERIFICATION
ο‘
ο‘
ο‘
ο‘
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 .
ο‘
ο‘
5. DO THE PCM IDLE LEARN PROCEDURE .
6. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
ο¬
ο¬
ο¬
ENGINE SPEED
VEHICLE SPEED
APP SENSOR
Current conditions
Signal
Values
Unit
ENGINE SPEED
VEHICLE SPEED
APP SENSOR
ο‘
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P2101 indicated?
YES : Check for poor connections or loose terminals at the throttle body and the PCM, and clean the throttle
body See THROTTLE BODY DISASSEMBLY AND REASSEMBLY , THROTTLE BODY REMOVAL
AND INSTALLATION or THROTTLE BODY CLEANING , then go to step 1. 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 P2118: THROTTLE ACTUATOR CURRENT RANGE/PERFORMANCE
PROBLEM
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
