P2127

Test 1:

Test 2 - 6:

Test 7 - 11:

Test 12 - 16:

Test 17:

SYMPTOM
P2127-LOW VOLTAGE AT THE THROTTLE VALIDATION SWITCH

WHEN MONITORED
Key on.

NOTE: This DTC will remain active until the accelerator pedal is cycled. Be sure to cycle the accelerator pedal after completing any repairs to this circuit and prior to checking DTC status with the DRBIII

SET CONDITION
Both Idle and Not Idle switches are in the same state simultaneously for a calibrated amount of time.

POSSIBLE CAUSES
- APPS idle switch
- APPS not idle switch
- Idle switch circuit open
- Not idle switch circuit open
- APPS return circuit open
- Idle switch circuit shorted to voltage
- Not idle switch circuit shorted to voltage
- ECM
- APPS 2 signal circuit open
- Intermittent condition
- 5-volt supply circuit open
- APPS 2 signal circuit shorted to ground
- APPS 2 5-volt supply circuit shorted to ground
- APPS 2 signal circuit shorted
- APPS 2 5-volt supply circuit shorted
- APPS
- ECM
- Intermittent condition