Typical Malfunction Thresholds
Functional check:
TYPICAL MALFUNCTION THRESHOLDS
| Either of following conditions 1 or 2 is met: | - |
| 1. Frequency that following conditions (a) and (b) are met: | 5 time or more |
| (a) Engine RPM - target engine RPM | Below -100 rpm, or 200 rpm or more |
| (b) Vehicle condition | Stop after vehicle was driven by 6.25 mph (10 km/h) or more |
| 2. Frequency that following conditions (a) and (b) are met: | Once |
| (a) Engine RPM - target engine RPM | Below -100 rpm, or 200 rpm or more |
| (b) ISC flow rate learning value | 1.3 L/sec. or less. or 8.82 L/sec. or more |
HINT:
- The following conditions may also cause DTC P0505 to be set:
- The floor carpet overlapping onto the accelerator pedal, causing the accelerator pedal to be slightly depressed and therefore the throttle valve position to be slightly open.
- The accelerator pedal being not fully released.
- Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction (See FREEZE FRAME DATA ).
- CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505)
- Connect the intelligent tester to the DLC3.
- Turn the engine switch on (IG).
- Turn the tester on.
- Enter the following the menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
- Read DTCs.
Result
RESULT REFERENCEDisplay (DTC output) Proceed to P0505 A P0505 and other DTCs B HINT:
If any DTCs other than P0505 are output, troubleshoot those DTCs first.
B : GO TO DTC CHART
A : GO TO NEXT STEP
- CHECK PCV HOSE (HOSE CONNECTIONS)
OK: PCV hose is connected correctly and is not damaged.
NG : REPAIR OR REPLACE PCV HOSE
OK : GO TO NEXT STEP
- CHECK AIR INDUCTION SYSTEM
- Check the air induction system for vacuum leakage.
OK: No leakage from air induction system.
NG : REPAIR OR REPLACE AIR INDUCTION SYSTEM
OK : GO TO NEXT STEP
- Check the air induction system for vacuum leakage.
- CHECK THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE)
- Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body. And check that the throttle valve moves smoothly.
OK: Throttle valve is not contaminated with foreign objects and moves smoothly.
NG : REPLACE THROTTLE BODY
OK : REPLACE ECM
- Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body. And check that the throttle valve moves smoothly.