Chrysler 300M 2002 Service Manual page 2848

P0715-INPUT SPEED SENSOR ERROR —
TEST
2 Start the engine.
Place the shifter in park.
With the DRBIII , read the Input Speed Sensor RPM.
Is the Input Speed Sensor reading below 400 RPM?
Yes → Go To 3
→ Go To 11
No
3 Turn the ignition off to the lock position.
CAUTION: Remove the Starter Relay from the PDC. This will prevent the
vehicle from being started in gear.
NOTE: Failure to remove the Starter Relay can cause a TCM - No Response
condition.
Install Transmission Simulator, Miller tool #8333 and the FWD Adapter Cable kit,
Miller tool #8333-1.
Ignition on, engine not running.
With the Transmission Simulator, set the Input/Output Speed switch to ON and
the rotary switch to the 3000/1250 position.
With the DRBIII , read the Input and Output RPM.
Does the Input speed read 3000 RPM and the Output speed read 1250 RPM (within
50 RPM)?
Yes → Go To 4
→ Go To 5
No
NOTE: After completion of this procedure, make sure to disconnect Trans-
mission Simulator, Miller tool #8333 and FWD adaptor cable kit, Miller tool
#8333-1 and reconnect all connectors.
4 If there are no possible causes remaining, view repair.
Repair
5 Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Input Speed Sensor 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 Input Speed Sensor Signal circuit from the Pinout Box
to the Input Speed Sensor connector.
Is the resistance above 5.0 ohms?
Yes → Repair the Input Speed Sensor Signal circuit for an open.
→ Go To 6
No
ACTION
Replace the Input Speed Sensor per the Service Information.
Perform 42LE TRANSMISSION VERIFICATION TEST - VER 1.
Perform 42LE TRANSMISSION VERIFICATION TEST - VER 1.
Continued
49
TRANSMISSION
APPLICABILITY
All
All
All
All