DTC P0506 00, P151B 00: IAC System Rpm Lower Than Expected: Notes
DTC P0506 00, P151B 00 DETECTION CONDITIONS AND POSSIBLE CAUSES (SKYACTIV-G 2.0, SKYACTIV-G 2.5)
| DTC P0506:00 |
IAC system RPM lower than expected |
| DTC P151B:00 |
IAC system problem |
| DETECTION CONDITION |
DTC P0506:00
- The actual idle speed is lower than expected by 100 rpm
for 14 s
, when the brake pedal is depressed (brake switch is on).
NOTE:
- If the atmospheric pressure is less than 72.3 kPa {0.737 kgf/cm 2
, 10.5 psi}
or the intake air temperature is below -10 °C {14 °F}
, the PCM cancels the diagnosis of DTC P0506:00.
Diagnostic support note
- This is a continuous monitor (CCM).
- The check engine light illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
- PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
- FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
- DTC is stored in the PCM memory.
DTC P151B:00
- The PCM cannot control the idle speed toward the target idle speed during the KOER self test.
Diagnostic support note
- The check engine light does not illuminate.
- FREEZE FRAME DATA (Mode 2) is not available.
- Snapshot data is available.
- DTC is stored in the PCM memory.
|
| FAIL-SAFE FUNCTION |
Not applicable |
| POSSIBLE CAUSE |
- A/C magnetic clutch malfunction
- Drive-by-wire control system malfunction
- Malfunction in injection amount measurement system (refer to DTC P0101:00
)
- Purge solenoid valve malfunction
- Air cleaner element restricted
- Throttle body passage blockage
- Engine malfunction
- Insufficient engine compression
- Generator control circuit malfunction
- PCM malfunction
|
| SYSTEM WIRING DIAGRAM |
Not applicable |
CAUTION:
- Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.
RELATED PIDS
| Item (definition) |
Unit/Condition |
Definition |
Condition/Specification (Reference) |
| ALTF |
% |
Field coil current control signal output to generator |
- Ignition switched ON (engine off): 0%
- Idle: Approx. 42%
- Racing (Engine speed is 2, 000 rpm): Approx. 29%
|
| ALTT V |
V |
Generator output voltage |
- Idle (no E/L): Approx. 14 V (This is internal calculation value and differs from terminal voltage)
|
| TP1 |
V |
TP sensor No. 1 voltage |
- Accelerator pedal released: Approx. 1.11V
- Accelerator pedal fully depressed: Approx. 4.59 V
|
| % |
Throttle valve position No. 1 |
- Accelerator pedal released: Approx. 22%
- Accelerator pedal fully depressed: Approx. 92%
|
| TP2 |
V |
TP sensor No. 2 voltage |
- Accelerator pedal released: Approx. 3.92 V
- Accelerator pedal fully depressed: Approx. 0.41 V
|
| % |
Throttle valve position No. 2 |
- Accelerator pedal released: Approx. 22%
- Accelerator pedal fully depressed: Approx. 82%
|