Chrysler 300M 2002 Service Manual page 2828

P0120-THROTTLE POSITION SENSOR SIGNAL CIRCUIT —
TEST
2 With the DRBIII , read Engine DTCs.
Are any of the DTCs P0121, P0122, P0123 present also?
Yes → Refer to the Powertrain category and perform the appropriate
→ Go To 3
No
3 Start the engine. Allow the engine to idle.
With the DRBIII in Transmission Sensors, read the TPS VOLTS.
Is the Throttle Position Sensor voltage below 0.3 or above 1.0 volts?
Yes → Go To 4
→ Go To 7
No
4 Turn the ignition off.
Disconnect the TPS harness connector.
Disconnect the PCM harness connector.
Note: Check connectors - Clean/repair as necessary.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the Sensor Ground Circuit between the TPS harness
connector and the Pinout Box.
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the Sensor Ground circuit for an open between the TCM
No
5 Turn the ignition off.
Disconnect the TPS harness connector.
Disconnect the PCM harness connector.
Note: Check connectors - Clean/repair as necessary.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the Throttle Position Sensor Signal Circuit from the Pinout
Box to the TPS harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the TPS Signal circuit for an open between the TCM
No
6 If there are no possible causes remaining, view repair.
Repair
ACTION
symptom.
Perform 42LE TRANSMISSION VERIFICATION TEST - VER 1.
harness connector and the splice.
Perform 42LE TRANSMISSION VERIFICATION TEST - VER 1.
harness connector and the splice.
Perform 42LE TRANSMISSION VERIFICATION TEST - VER 1.
Replace the Powertrain Control Module. WITH THE DRBIII
PERFORM QUICK LEARN AND REPROGRAM PINION FAC-
TOR.
Perform 42LE TRANSMISSION VERIFICATION TEST - VER 1.
29
TRANSMISSION
Continued
APPLICABILITY
All
All
All
All
All