DTC P2118

DTC P2118  : Throttle Actuator Current Range/Performance Problem

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Slowly press the accelerator pedal to the floor.

   -4. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P2118 Throttle Actuator Current Range/Performance Problem

   Is DTC P2118 indicated?

   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, then clean the throttle body . If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

2. Open wire check (SG3(DBW) 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 E (80P)

   Throttle body 6P connector

   -4. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector E (80P): disconnected
   	Throttle body 6P connector: disconnected
   Test point 1	Throttle body 6P connector (female terminals) No. 3:
   Test point 2	PCM connector E (80P) No. 76

   Courtesy of HONDA, U.S.A., INC.

   Is there 1.0 Ω or less?

   YES 

   Go to step 3.

   NO 

   Repair an open in the SG3(DBW) wire between the PCM (E76) and the throttle body.

3. Shorted wire check (MTR1 line to MTR2 line)

   -1. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector E (80P): disconnected
   	Throttle body 6P connector: disconnected
   Test point 1	Throttle body 6P connector (female terminals) No. 1:
   Test point 2	Throttle body 6P connector (female terminals) No. 2:

   Courtesy of HONDA, U.S.A., INC.

   Is there 1 MΩ or more?

   YES 

   Go to step 4.

   NO 

   Repair a short in the MTR1 wire to the MTR2 wire between the PCM (E27, E28) and the throttle body.

4. Shorted wire check (MTR1 line, MTR2 line)

   -1. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector E (80P): disconnected
   	Throttle body 6P connector: disconnected
   Test point 1	Throttle body 6P connector (female terminals) No. 1 and No. 2:
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there 1 MΩ or more?

   YES 

   The MTR1 wire and the MTR2 wire are OK. Go to step 5.

   NO 

   Repair a short in the MTR1 wire or the MTR2 wire between the PCM (E27, E28) and the throttle body.

5. Throttle body internal circuit check (short in wires)

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

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector E (80P): disconnected
   	Throttle body 6P connector: disconnected
   Test point 1	Throttle body 6P connector (male terminals) No. 1 (throttle body side):
   Test point 2	Throttle body 6P connector (male terminals) No. 2 (throttle body side):

   Courtesy of HONDA, U.S.A., INC.

   Is there about 1.2 - 1.0 kΩ?

   YES 

   Go to step 6.

   NO 

   Replace the throttle body .

6. Throttle body internal circuit check (short to ground)

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

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector E (80P): disconnected
   	Throttle body 6P connector: disconnected
   Test point 1	Throttle body 6P connector (male terminals) No. 1 (throttle body side) and No. 2 (throttle body side):
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there 1 MΩ or more?

   YES 

   Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM .

   NO 

   Replace the throttle body .