P1523

P1523 00

Throttle Mechanical, Throttle Default Position Fault







Fault symptom
Check Engine
Cruise control not working.
Limp home

On-board diagnosis

Type of diagnosis:
Continually

Enable criteria:
General conditions for this DTC
Crankshaft rotating.
Engine running.

Test 1
- None or one of the throttle position sensors damaged.

Test 2
- Both throttle position sensors are damaged.

Fault criteria:
Test 1
- When the throttle position differs more than 41% from the requested position for a duration of 0.6 s.

Test 2
- When the throttle opening area is equal to an opening of more than 23 g/s for 150 ms.

Each time the voltage across the throttle motor is disengaged, the throttle returns to its starting position.

Dependent
None

System reaction to a fault:
Correction of mass air flow/combustion for fuel calculation is blocked.
Limited acceleration and idle function.
Cruise control blocked.
Secondary air switched off.

OK report:
Fault criteria NOT fulfilled with ignition off.

Fault handling:
Type III
(See Description of On-Board Diagnostics/Fault handling III, "Other emission-related components and functions" for more information.)

Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:
Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:
Test value:
- Throttle Position Sensor 1
- Throttle Position Sensor 2

Activation:
- Throttle Position Test