DTC P0506 (1.5 L Engine)
DTC P0506 : Idle Control System RPM Lower Than Expected
NOTE: Before you troubleshoot, review the general troubleshooting information .
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P0506 Idle Control System RPM Lower Than Expected |
DTC (PGM-FI)
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS.
-3. Start the engine. Hold the engine speed at 3, 000 rpm without load (CVT in P or N, M/T in neutral) until the radiator fan comes on, then let it idle at least 20 seconds.
-4. Check for these conditions in the DATA LIST with the HDS.
- ECT Sensor 1 above 158 deg. F (70 deg. C)
- IAT Sensor (1) above 18 deg. F (-7.6 deg. C)
- Vehicle Speed is 0 mph (0 km/h)
- AF FB (ST Fuel Trim) between 0.75 and 1.47
- FSS is CLOSED
Signal Current conditions Values Unit ECT Sensor 1 IAT Sensor (1) Signal Current conditions Values Unit Vehicle Speed AF FB (ST Fuel Trim) FSS -5. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS.
DTC Description OBD STATUS P0506 Idle Control System RPM Lower Than Expected Does the HDS indicate FAILED?
YES
The failure is duplicated. Go to step 2.
NO
If the HDS indicates PASSED, go to step 3. If the HDS indicates EXECUTING, keep idling until a result comes on. If the HDS indicates OUT OF CONDITION, go to step 1-4 and recheck.
- Throttle body visual check
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Remove the intercooler outlet pipe B and the hose from the throttle body .
-3. Check for dirt, carbon, or damage in the throttle bore.
Is there dirt, carbon, or damage in the throttle bore?
YES
If there is dirt or carbon, clean the throttle body . Also check for damage to the air cleaner element. If there is damage in the throttle bore, replace the throttle body .
NO
The throttle body is OK. Check the A/C system, then go to step 4.
- Throttle body visual check
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Remove the intercooler outlet pipe B and the hose from the throttle body .
-3. Check for dirt, carbon, or damage in the throttle bore.
Is there dirt, carbon, or damage in the throttle bore?
YES
If there is dirt or carbon, clean the throttle body . Also check for damage to the air cleaner element. If there is damage in the throttle bore, replace the throttle body .
NO
The throttle body is OK. Go to step 4.
- Idle control system check
-1. Reinstall the intercooler outlet pipe B and the hose .
-2. Turn the vehicle to the ON mode.
-3. Clear the DTC with the HDS.
-4. Start the engine. Hold the engine speed at 3, 000 rpm without load (CVT in P or N, M/T in neutral) until the radiator fan comes on, then let it idle at least 20 seconds.
-5. Check for these conditions in the DATA LIST with the HDS.
- ECT Sensor 1 above 158 deg. F (70 deg. C)
- IAT Sensor (1) above 18 deg. F (-7.6 deg. C)
- Vehicle Speed is 0 mph (0 km/h)
- AF FB (ST Fuel Trim) between 0.75 and 1.47
- FSS is CLOSED
Signal Current conditions Values Unit ECT Sensor 1 IAT Sensor (1) Vehicle Speed AF FB (ST Fuel Trim) FSS -6. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS.
DTC Description OBD STATUS P0506 Idle Control System RPM Lower Than Expected Does the HDS indicate PASSED?
YES
Intermittent failure, the system is OK at this time. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .
NO
If the HDS indicates FAILED, check the A/C system, then recheck. If the HDS indicates EXECUTING, keep idling until a result comes on. If the HDS indicates OUT OF CONDITION, go to step 4-5 and recheck.