Chrysler PT Cruiser 2001 Service Manual Supplement page 2503

*NO RESPONSE FROM PCM (SCI ONLY) —
TEST
4 Turn the ignition off.
Disconnect the Powertrain Control Module harness connector.
Disconnect the DRB from the Data Link Connector.
Measure the resistance of the SCI Receive circuit between the PCM connector and
the Data Link Connector.
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the SCI Receive circuit for an open.
No
5 Turn the ignition off.
Disconnect the Powertrain Control Module harness connector.
Disconnect the DRB from the Data Link Connector.
Measure the resistance of the SCI Transmit circuit between the PCM connector and
the Data Link Connector.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the SCI Transmit circuit for an open.
No
6 Turn the ignition off.
Disconnect the Powertrain Control Module harness connector.
Disconnect the DRB from the Data Link Connector.
Measure the resistance between ground and the SCI Transmit circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 7
→ Go To 8
No
7 Turn the ignition off.
Disconnect the Transmission Control Module harness connector.
Disconnect the DRB from the Data Link Connector.
Measure the resistance between ground and the SCI Transmit circuit.
Is the resistance below 5.0 ohms?
Yes → Repair the SCI Transmitt circuit for a short to ground.
→ Replace the Transmission Control Module.
No
8 Connect the DRB to a functional Data Link on another vehicle.
Turn the ignition on.
With the DRB, attempt to read trouble codes.
Did the DRB display No Response?
Yes → Repair or replace the DRB and cable as necessary.
→ Replace the Powertrain Control Module.
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Continued
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COMMUNICATION
APPLICABILITY
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