TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Leak Detection Pump electrical harness connector.
Connect a 12 volt test light to a good 12 volt source (B+).
Turn the ignition on.
With the DRBIII
t, actuate the Leak Detection Pump.
Check the LDP Solenoid Control circuit, with the test light, while the Leak Detection
Pump is actuating.
Does the test light blink?
All
Yes
→
Go To
4
No
→
Go To
5
4
If there are no possible causes remaining, view repair.
All
Repair
Replace the Leak Detection Pump.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
5
Turn the ignition off.
Disconnect the Leak Detection Pump electrical harness connector.
Disconnect the PCM harness connector(s).
Measure the resistance between the LDP Solenoid Control circuit and ground.
Is the resistance below 5.0 Ohms?
All
Yes
→
Repair the LDP Solenoid Control Circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
No
→
Go To
6
6
Turn the ignition off.
Disconnect the Leak Detection Pump Solenoid harness connector.
Disconnect the PCM harness connector(s)..
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the LDP Solenoid Control Circuit from the PCM harness
connector to the LDP harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Go To
7
No
→
Repair the open Leak Detection Pump Solenoid Control Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
7
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
8
Turn the ignition off.
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?
All
Yes
→
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
No
→
Go To
9
233
DRIVEABILITY - GAS
P1495-LEAK DETECTION PUMP SOLENOID CIRCUIT —
Continued