Chrysler PT Cruiser 2001 Service Manual Supplement page 2579

P0403 - EGR SOLENOID CIRCUIT —
TEST
3 Turn the igntion off.
Disconnect the EGR solenoid harness connector.
Turn the ignition on.
With the DRB, actuate the ASD Relay.
Using a 12-volt Test Light connected to ground, probe the ASD relay output circuit at
the EGR solenoid harness connector.
Does the 12 volt test light illuminate?
Yes → Go To 4
→ Repair the open in the ASD Realy output circuit.
No
4 Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the EGR solenoid harness connector.
Measure the resistance of the EGR solenoid control circuit to engine ground at the
EGR solenoid connector.
Is the resistance below 5.0 ohms?
Yes → Repair the short to ground in the EGR solenoid control circuirt.
→ Go To 5
No
5 Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the EGR solenoid harness connector.
Measure the resistance of the EGR solenoid control circuit between the PCM
connector and the EGR solenoid connector.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the open in the EGR solenoid control circuit.
No
6 Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the EGR solenoid harness connector.
Measure the resistance of the EGR solenoid control circuit to sensor ground circuit at
the EGR solenoid connector.
Is the resistance below 5.0 ohms?
Yes → Repair the EGR solenoid control circuit for a short to the sensor
→ Go To 7
No
7 If there are no possible causes remaining, view repair.
Repair
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Replace the PCM.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
DRIVEABILITY - GAS
Continued
119
APPLICABILITY
All
All
All
All
All