Chrysler 2005 Crossfire SRT6 Service Manual page 2030

9 - 106 ENGINE - ELECTRICAL DIAGNOSTICS
(P0123) APPS SIGNAL 1 CIRCUIT HIGH (CONTINUED)
When Monitored and Set Condition
• When Monitored: With the ignition on and no other Accelerator Pedal Position (APP) Sensor 1 DTCs present.
• Set Condition: When APP Sensor Signal 1 voltage is too high. Engine will only idle if the brake pedal is
pressed or has failed. Acceleration rate and engine output are limited.
ACCELERATOR PEDAL POSITION SENSOR SIGNAL 1 CIRCUIT SHORT TO VOLTAGE
ACCELERATOR PEDAL POSITION SENSOR SIGNAL 1 SHORT TO APP SENSOR 5-VOLT SUPPLY CIRCUIT
SENSOR GROUND CIRCUIT OPEN
ACCELERATOR PEDAL POSITION SENSOR
POWERTRAIN CONTROL MODULE
For a complete Powertrain Control Module Circuit Diagram, (Refer to 9 - ENGINE - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
PRE-DIAGNOSTIC CHECK OUT
Note: Always perform diagnostics with a fully charged battery.
Note: Check connectors — Clean/repair as necessary. Poor pin to
terminal connections can set DTCs.
Note: Check for applicable TSBs related to the problem.
Turn the ignition on.
With the DRB III , read PCM DTCs.
Using the wiring diagram/schematic as a guide, inspect the wiring and
connectors. Repair as necessary.
Perform this procedure prior to symptom diagnosis.
Continue
Go To 2
2.
CHECK THE APP SENSOR SIGNAL 1 VOLTAGE WITH THE DRB III
Turn the ignition on.
With the DRB III , read the APP 1 voltage.
Is the voltage above 3.5 volts?
Yes >> Go To 3
No >> Go To 10
POSSIBLE CAUSES
ZH