Chrysler PT Cruiser 2001 Service Manual Supplement page 2646

DRIVEABILITY - GAS
P1495-LEAK DETECTION PUMP SOLENOID CIRCUIT —
TEST
8 Turn the ignition off.
Disconnect the Leak Detection Pump electrical connector.
Disconnect the Powertrain Control Module connectors.
Measure the resistance between the LDP Solenoid Control circuit and ground.
Is the resistance below 5.0 Ohms?
Yes → Repair the LDP Solenoid Control Circuit for a short to ground.
→ Go To 9
No
9 Turn the ignition off.
Disconnect the Leak Detection Pump electrical connector.
Disconnect the Powertrain Control Module connectors.
Measure the resistance of the LDP Solenoid Control circuit from the LDP connector
to the PCM connector.
Is the resistance below 5.0 Ohms?
Yes → Go To 10
→ Repair the open LDP Solenoid Control Circuit.
No
10 Turn the ignition off.
Disconnect the Leak Detection Pump electrical connector.
Disconnect the Powertrain Control Module connectors.
Measure the resistance of the LDP Switch Sense circuit from the LDP connector to
the PCM connector.
Is the resistance below 5.0 Ohms?
Yes → Go To 11
→ Repair the open LDP Switch Sense Circuit.
No
11 Turn the ignition off.
Disconnect the Leak Detection Pump electrical connector.
Disconnect the Powertrain Control Module connectors.
Measure the resistance between the LDP Switch Sense circuit and ground.
Is the resistance below 5.0 Ohms?
Yes → Repair the LDP Switch Sense Circuit for a short to ground.
→ Go To 12
No
12 If there are no possible causes remaining, replace the Powertrain Control Module.
View repair options.
Repair
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 6.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
Replace the Powertrain Control Module.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
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Continued
APPLICABILITY
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