DTC P2118
DTC P2118 : Throttle Actuator Current Range/Performance Problem
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P2118 Throttle Actuator Current Range/Performance Problem |
DTC (PGM-FI)
- 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 Freeze Frame 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 .
- Open wire check (SG5 line)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Jump the SCS line with the HDS.
-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 circuit SG5 Test point 1 Throttle body 6P connector No. 3 (GRN) Test point 2 PCM connector B (51P) No. 46 (GRN) Is there continuity?
YES
The SG5 wire is OK. Go to step 3.
NO
Repair an open in the SG5 wire between the PCM (B46) and the throttle body, then do the repair verification.
- Shorted wire check (MTR1 line to MTR2 line)
-1. Disconnect the following connector.
PCM connector C (51P) -2. 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 Test circuit MTR1, MTR2 Test point 1 Throttle body 6P connector No. 1 (LT BLU) Test point 2 Throttle body 6P connector No. 2 (WHT) Is there continuity?
YES
Repair a short in the MTR1 wire to the MTR2 wire between the throttle body and the PCM (C2, C3), then do the repair verification.
NO
Go to step 4.
- Shorted wire check (MTR1 line, MTR2 line)
-1. 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 Test circuit MTR1 Test point 1 Throttle body 6P connector No. 2 (WHT) Test point 2 Body ground Test circuit MTR2 Test point 1 Throttle body 6P connector No. 1 (LT BLU) Test point 2 Body ground Is there continuity?
YES
Repair a short in the MTR1 wire or the MTR2 wire between the throttle body and the PCM (C2, C3), then do the repair verification.
NO
The MTR1 and MTR2 wires are OK. Go to step 5.
- Open wire check (MTR1 line, MTR2 line)
-1. Connect terminals A and B with a jumper wire.
Terminal A Throttle body 6P connector No. 1 (LT BLU) Terminal B Throttle body 6P connector No. 2 (WHT) -2. 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 circuit MTR1, MTR2 Test point 1 PCM connector C (51P) No. 2 (LT BLU) Test point 2 PCM connector C (51P) No. 3 (WHT) 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, then do the repair verification.
- Throttle body internal circuit check (short in wires)
-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 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) Is there about 1.2 Ω-1.0 kΩ?
YES
Go to step 7
NO
Replace the throttle body , then do the repair verification.
- Throttle body internal circuit check (short to ground)
-1. At the throttle body side, 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 Test circuit MTR1 Test point 1 Throttle body 6P connector No. 2 (throttle body side) Test point 2 Body ground Test circuit MTR2 Test point 1 Throttle body 6P connector No. 1 (throttle body side) Test point 2 Body ground Is there continuity?
YES
Replace the throttle body , then do the repair verification.
NO
The throttle body internal circuit is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then do the repair verification.
- Repair verification
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Reconnect all connectors.
-3. Exit the SCS mode with the HDS.
-4. Turn the vehicle to the ON mode.
-5. Reset the PCM with the HDS .
Reset PCM
-6. Do the PCM idle learn procedure .
-7. Slowly press the accelerator pedal to the floor.
-8. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC Freeze Frame P2118 Throttle Actuator Current Range/Performance Problem DTC (PGM-FI)
Is DTC P2118 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 , then recheck. If the PCM was substituted, go to step 1.
NO
Troubleshooting is complete. If the PCM was substituted, replace the original PCM . If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.