LEMON Manuals: Even more car manuals for everyone
Home >> Honda >> 2017 >> Pilot EX, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - DTC Diagnostics (5 Of 6) >> DTC Troubleshooting >> DTC P2101 (6-Speed A/T, 16-18 9-Speed A/T)

DTC P2101 (6-Speed A/T, 16-18 9-Speed A/T)

DTC P2101  : ETCS Malfunction

CAUTION:

Do not insert your fingers into the installed throttle body when you turn the vehicle to the ON mode, or while the vehicle is in ON mode. If you do, you will seriously injure your fingers if the throttle valve is activated.

NOTE:  Before you troubleshoot, review the general troubleshooting information - Refer to: If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot - Refer to: How to Troubleshoot the Fuel and Emissions Systems .

DTC Description Confirmed DTC Pending DTC Freeze Frame
P2101 ETCS Malfunction      

DTC (PGM-FI)

  1. ETCS system check

    - 1. Turn the vehicle to the ON mode.

    - 2. Clear the DTC with the HDS.

    - 3. Select the ETCS TEST in the INSPECTION MENU with the HDS.

    ETCS TEST

    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

    - 1. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:

    • ENGINE SPEED
    • VEHICLE SPEED
    • APP SENSOR
    Signal Current conditions
    Values Unit
    ENGINE SPEED    
    VEHICLE SPEED    
    APP SENSOR    

    - 2. Check for Pending or Confirmed DTCs with the HDS.

    DTC (PGM-FI)

    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.

    If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot - Refer to:

    How to Troubleshoot the Fuel and Emissions Systems .

  3. Determine possible failure area (throttle body, others)

    - 1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Disconnect the intake air duct from the throttle body.

    - 3. Turn the vehicle to the ON mode.

    - 4. Clear the DTC with the HDS.

    - 5. Visually check the throttle valve operation while doing the ETCS TEST in the INSPECTION MENU with the HDS.

    ETCS TEST

    Does the throttle valve operate smoothly?

    YES 

    Clean the throttle body . If DTC P2101 is indicated again, replace the throttle body .

    NO 

    Go to step 4.

  4. Open wire check (SG5 line)

    - 1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Jump the SCS line with the HDS, and wait more than 1 minute.

    - 3. Disconnect the following connectors.

    PCM connector B (51P)
    Throttle body 6P connector

    - 4. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
    PCM connector B (51P): disconnected
    Throttle body 6P connector: disconnected
    Test point 1 Throttle body 6P connector No. 3
    Test point 2 PCM connector B (51P) No. 46 - Refer to:
    PCM Connector for Inputs and Outputs (16-20 6-Speed A/T), or
    PCM Connector for Inputs and Outputs (16-18 9-Speed A/T)
    GHH307899Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The SG5 wire is OK. Go to step 5.

    NO 

    Repair an open in the SG5 wire between the PCM (B46) and the throttle body.

  5. Open wire check (MTR1 line, MTR2 line)

    - 1. Disconnect the following connector.

    PCM connector C (51P)

    - 2. Connect terminals A and B with a jumper wire.

    Terminal A Throttle body 6P connector No. 1
    Terminal B Throttle body 6P connector No. 2
    GHH307900Courtesy of HONDA, U.S.A., INC.

    - 3. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
    PCM connector B (51P): disconnected
    PCM connector C (51P): disconnected
    Throttle body 6P connector: disconnected
    Throttle body 6P connector No. 1 and No. 2: jumped
    Test point 1 PCM connector C (51P) No. 2 - Refer to:
    PCM Connector for Inputs and Outputs (16-18 9-Speed A/T), or
    PCM Connector for Inputs and Outputs (16-20 6-Speed A/T)
    Test point 2 PCM connector C (51P) No. 3 - Refer to:
    PCM Connector for Inputs and Outputs (16-18 9-Speed A/T), or
    PCM Connector for Inputs and Outputs (16-20 6-Speed A/T)

    Is there continuity?

    YES 

    The MTR1 and MTR2 wires are OK. Go to step 6.

    NO 

    Repair an open in the MTR1 wire or the MTR2 wire between the PCM (C2, C3) and the throttle body.

  6. Throttle body internal circuit check

    - 1. Remove the jumper wire from the throttle body 6P connector.

    - 2. At the throttle body side, measure the resistance between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
    PCM connector B (51P): disconnected
    PCM connector C (51P): disconnected
    Throttle body 6P connector: disconnected
    Test point 1 Throttle body 6P connector No. 1 (throttle body side)
    Test point 2 Throttle body 6P connector No. 2 (throttle body side)
    GHH307901Courtesy of HONDA, U.S.A., INC.

    Is there about 1.0 kΩ or more?

    YES 

    Replace the throttle body .

    NO 

    The throttle body internal circuit is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good PCM - Refer to: PCM Removal and Installation (6-Speed A/T, 16-18 9-Speed A/T) .

scientia non olet · About LEMON Manuals