Chrysler 300M 2002 Service Manual page 2663

DRIVEABILITY - NGC
P0580-SPEED CONTROL SWITCH #1 LOW —
TEST
4 Turn the ignition off.
Disconnect the Speed Control On/Off Switch harness connector.
Disconnect the Speed Control Resume/Accel Switch harness connector.
Disconnect the PCM harness connector.
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 between the Sensor ground circuit and the Speed Control
Switch Signal circuit at the Speed Control Switch.
Is the resistance below 5.0 ohms?
Yes → Repair the Speed Control Switch Signal circuit short to Sensor
→ Go To 5
No
5 Turn the ignition off.
Disconnect the Speed Control On/Off Switch harness connector.
Disconnect the Speed Control Resume/Accel Switch harness connector.
Disconnect the PCM harness connector.
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 between ground and the Speed Control Switch Signal circuit
to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Repair the short to ground in the Speed Control Switch Signal
→ Go To 6
No
6 NOTE: Before continuing, disconnect the PCM harness connector and
check the related wiring terminals for corrosion, damage or terminal push
out. Repair as necessary.
If there are no possible causes remaining, view repair.
Repair
ACTION
ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
Continued
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APPLICABILITY
All
All
All