TEST ACTION APPLICABILITY
28 Record the Fuel Pressure Gauge reading.
Ignition Key Off.
Warning: The Fuel System must be opened and may be under high pressure.
Release Fuel pressure.
Remove the Fuel Pressure Gauge.
Install adapter 6631 between Fuel Filter Outlet and Chassis Fuel Supply Tube.
Connect Fuel Pressure Gauge to adapter 6631.
Ignition On, Engine Not Running.
With DRB, actuate the ASD Fuel System.
Record the Fuel Pressure Gauge reading.
Compare this reading with the previous reading.
Is the fuel pressure at least 2 psi higher than the previous reading?ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 FFV and/or
ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6
Ye s®Repair restriction in Chassis Fuel Supply Line between Fuel
Filter and Fuel Rail.
Perform Powertrain Verification Test VER-1A.
No®Go To 29
29 If there are no potential causes remaining, the Fuel Pump Module is assumed to be
defective.
View repair options.ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 FFV and/or
ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6
Repair
Replace Fuel Pump Module.
Perform Powertrain Verification Test VER-1A.
30 Ignition Off.
Disconnect the Fuel Pump Harness Connector.
Note: Check connectors - Clean/repair as necessary.
Caution: It is critical that the Fuel Pump Connector has a clean and tight
connection.
With an Ohmmeter, measure the Fuel Pump Ground Circuit.
Is the resistance below 5.0 ohms?ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 FFV and/or
ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6
Ye s®Go To 31
No®Repair the open Fuel Pump Ground Circuit.
Perform Powertrain Verification Test VER-1A.
31 Ignition Off.
Disconnect the Fuel Pump Relay.
Check connectors - Clean/repair as necessary.
Ignition On , Engine Not Running.
With a Voltmeter, measure the Fuel Pump Relay Fused B(+) Circuit.
Is the voltage above 10.0 volts?ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 FFV and/or
ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6
Ye s®Go To 32
No®Repair the open Fuel Pump Relay Fused B(+) Circuit.
Perform Powertrain Verification Test VER-1A.
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* CHECKING THE FUEL SYSTEM ÐContinued
ProCarManuals.com
TEST ACTION APPLICABILITY
32 Ignition Off.
Disconnect the Fuel Pump Harness Connector.
Note; Check connectors - Clean/repair as necessary.
Caution: It is critical that the Fuel Pump Connector has a clean and tight
connection.
Ignition On, Engine Not Running.
Actuate the ASD Fuel System test.
With a Voltmeter, measure the Fuel Pump Relay Output Circuit.
Is the voltage above 10.0 volts?ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 FFV and/or
ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6
Ye s®Go To 33
No®Repair the open Fuel Pump Relay Output Circuit.
Perform Powertrain Verification Test VER-1A.
33 Ignition Off.
Disconnect the Fuel Pump Relay.
Check connectors - Clean/repair as necessary.
Install a substitute Relay of the same part number for the Fuel Pump Relay.
Attempt to start the Engine.
Does the Engine start?ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 FFV and/or
ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6
Ye s®Replace the Fuel Pump Relay.
Perform Powertrain Verification Test VER-1A.
No®Go To 34
34 Ignition Off.
If there are no potential causes remaining, the Fuel Pump is assumed to be defective.
View repair options.ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 FFV and/or
ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6
Repair
Replace the Fuel Pump.
Perform Powertrain Verification Test VER-1A.
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* CHECKING THE FUEL SYSTEM ÐContinued
ProCarManuals.com
Symptom:
* CHECKING THE SECONDARY IGNITION SYSTEM
POSSIBLE CAUSES
GOOD SPARK AT SPARK PLUG #1
AUTO SHUTDOWN RELAY OUTPUT CIRCUIT OPEN
AUTO SHUTDOWN RELAY OUTPUT CIRCUIT OPEN
COIL SECONDARY CABLE DEFECTIVE
FUSED B(+) CIRCUIT OPEN
FUSED B(+) CIRCUIT OPEN
IGNITION COIL CONNECTOR OBSERVABLE DEFECT
IGNITION COIL CONNECTOR OBSERVABLE DEFECT
IGNITION COIL DEFECTIVE
IGNITION COIL SECONDARY CABLE #1 DEFECTIVE
IGNITION COIL SECONDARY CABLE #4 DEFECTIVE
SECONDARY IGNITION COMPONENT(S) DEFECTIVE
SPARK PLUG CABLE #1 DEFECTIVE
AUTO SHUTDOWN RELAY DEFECTIVE
AUTO SHUTDOWN RELAY DEFECTIVE
IGNITION COIL DEFECTIVE
IGNITION COIL DEFECTIVE (RESISTANCE OUT OF RANGE)
SPARK PLUG #1 OR #4 DEFECTIVE
GOOD SPARK AT SPARK PLUG #1
GOOD SPARK AT SPARK PLUG #1
TEST ACTION APPLICABILITY
1 Ignition Off.
Disconnect the Spark Plug Cable at Spark Plug #1.
Connect the Cable to a Spark Tester.
Connect the Spark Tester to a good Ground.
Warning: Ensure that there are no Fuel or Fuel vapors present in or near
the Engine compartment before continuing with the test.
While cranking the Engine for 10 seconds, watch for spark.
Is there good spark?ENGINE - 3.0L V6
Ye s®Refer to Symptom list for further diagnostic tests.
No®Go To 2
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TEST ACTION APPLICABILITY
12 Ignition Off.
Disconnect the Ignition Coil Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
Using a Jumper Wire connect the ASD Relay Output Circuit to Ground at the
Ignition Coil Connector.
With an Ohmmeter mesaure the ASD Output Circuit for resistance to Ground at the
Relay.
Is the resistance below 5.0 ohms?ENGINE - 3.0L V6
Ye s®Go To 13
No®Repair open ASD Relay Output Circuit.
Perform Powetrain Verification Test VER-1A.
13 Ignition Off.
Disconnect the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
Ignition On, Engine Not Running.
With a Voltmeter, measure the Fused B(+) Circuit cavity B in ASD Relay Connector.
Is the voltage above 10 volts?ENGINE - 3.0L V6
Ye s®Replace the Auto Shutdown Relay.
Perform Powertrain Verification Test VER-1A.
No®Repair open Fused B+.
Perform Verification TEST VER-1A
14 Ignition Off.
Remove the Distributor Cap.
Is the Distributor Rotor loose?ENGINE - 3.0L V6
Ye s®Repair loose Distributor Rotor as necessary.
Perform Verification TEST VER-1A
No®Go To 15
15 If there are no potential causes remaining, the Distributor Drive System is assumed
to be defective.
View repair options.ENGINE - 3.0L V6
Repair
Repair the Distributor Drive System.
Perform Powertrain Verification Test VER-1A.
16 Ignition Off.
Disconnect the Spark Plug Cable at Spark Plug #1.
Connect the Cable to a Spark Tester.
Connect the Spark Tester to a good Ground.
Warning: Ensure that there are no Fuel or Fuel vapors present in or near
the Engine compartment before continuing with the test.
While cranking the Engine for 10 seconds, watch for spark.
Is there good spark?ENGINE - 2.0L
and 2.4L I-4 DOHC
Ye s®Refer to Symptom list for further diagnostic tests.
No®Go To 17
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* CHECKING THE SECONDARY IGNITION SYSTEM ÐContinued
ProCarManuals.com
TEST ACTION APPLICABILITY
21 Ignition Off.
Disconnect the Ignition Coil Secondary Cable at Spark Plug #1.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Ignition Coil Secondary Cable at Spark Plug #4.
Note: Check connectors - Clean/repair as necessary.
Note: Either Spark Plug #1 or #4 will not produce a good spark.
Remove Spark Plugs #1 and #4.
Inspect and determine which Spark Plug needs replacement.
View repair options.ENGINE - 2.0L
and 2.4L I-4 DOHC
Repair
Replace the Spark Plug that will not produce a spark.
Perform Powertrain Verification Test VER-1A.
22 Ignition Off.
Disconnect the Ignition Coil Connector.
Note: Check connectors - Clean/repair as necessary.
Inspect Terminals.
Is any Terminal damaged, pushed out, or miswired?ENGINE - 2.0L
and 2.4L I-4 DOHC
Ye s®Repair Terminal(s) for damage, pushout, or miswiring.
Perform Powertrain Verification Test VER-1A.
No®Go To 23
23 Ignition On, Engine Not Running.
With the DRB, actuate Ignition Coil #1.
With a Voltmeter, measure the ASD Relay Output Circuit.
Is the voltage above 10 volts?ENGINE - 2.0L
and 2.4L I-4 DOHC
Ye s®Replace Ignition Coil.
Perform Powertrain Verification Test VER-1A.
No®Go To 24
24 Ignition Off.
Disconnect the Ignition Coil Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
Using a Jumper Wire connect the ASD Relay Output Circuit to Ground at the
Ignition Coil Connector.
With an Ohmmeter, measure the ASD Relay Output Circuit for resistance to ground
at the Relay.
Is the resistance below 5.0 ohms?ENGINE - 2.0L
and 2.4L I-4 DOHC
Ye s®Go To 25
No®Repair open ASD Relay Output Circuit.
Perform Powertrain Verification Test VER-1A.
25 Ignition Off.
Disconnect the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
With a Voltmeter, measure the Fused B(+) Circuit, cavity B in ASD Relay Connector.
Is the Voltage above 10 volts?ENGINE - 2.0L
and 2.4L I-4 DOHC
Ye s®Replace the Auto Shutdown Relay.
Perform Verification Test VER-1A
No®Repair open Fused B(+).
Perform Verification TEST VER-1A
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* CHECKING THE SECONDARY IGNITION SYSTEM ÐContinued
ProCarManuals.com
TEST ACTION APPLICABILITY
30 Ignition On, Engine Not Running.
With the DRB, actuate Ignition Coil #1.
With a Voltmeter, measure the ASD Relay Output Circuit.
Is the voltage above 10 volts?ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 and/or EN-
GINE - 3.8L V6
and/or ENGINE -
3.3L V6 FFV
Ye s®Replace Ignition Coil.
Perform Powertrain Verification Test VER-1A.
No®Go To 31
31 Ignition Off.
Disconnect the Ignition Coil Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
Using a Jumper Wire connect the ASD Relay Output Circuit to Ground at the
Ignition Coil Connector.
With an Ohmmeter, measure the ASD Relay Output Circuit for resistance to ground
at the Relay.
Is the resistance below 5.0 ohms?ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 and/or EN-
GINE - 3.8L V6
and/or ENGINE -
3.3L V6 FFV
Ye s®Go To 32
No®Repair open ASD Relay Output Circuit.
Perform Powertrain Verification Test VER-1A.
32 Ignition Off.
Disconnect the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
With a Voltmeter, measure the Fused B(+) Circuit, cavity B in ASD Relay Connector.
Is the Voltage above 10 volts?ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 and/or EN-
GINE - 3.8L V6
and/or ENGINE -
3.3L V6 FFV
Ye s®Replace the Auto Shutdown Relay.
Perform Verification Test VER-1A
No®Repair open Fused B(+).
Perform Verification TEST VER-1A
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* CHECKING THE SECONDARY IGNITION SYSTEM ÐContinued
ProCarManuals.com
Symptom:
* NO CRANK CONDITION
POSSIBLE CAUSES
BATTERY CIRCUIT RESISTANCE TOO HIGH
FUSED B(+) CIRCUIT OPEN
STARTER RELAY CONTROL CIRCUIT OPEN
STARTER RELAY OUTPUT CIRCUIT OPEN
CRANKSHAFT NOT ABLE TO ROTATE
STARTER MOTOR DEFECTIVE
PCM DEFECTIVE (NO CRANK CONDITION)
STARTER RELAY DEFECTIVE (RESISTANCE <=100 OHMS)
STARTER RELAY DEFECTIVE (RESISTANCE ABOVE 100 OHMS)
IGNITION SWITCH OUTPUT CIRCUIT OPEN
PARK/NEUTRAL SWITCH DEFECTIVE
TEST ACTION APPLICABILITY
1Note: Ensure the SKIM has proper communication and that there are no
SKIM DTC's present before continuing.
Ignition Off.
Disconnect the Starter Relay Connector.
Note: Check connectors - Clean/repair as necessary.
Warning: The Transmission must be in Park and the Parking Brake must be
on for the next step.
Warning: The engine may be cranked in the next step. Keep away from
moving parts.
Briefly connect a jumper wire between Starter Relay Output and Fused B(+)
Circuits.
Did the Starter Motor crank the Engine?All
Ye s®Go To 2
No®Go To 9
2 Ignition Off.
Disconnect the Starter Relay Connector.
Note: Check connectors - Clean/repair as necessary.
With a Voltmeter, measure the Fused B(+) Circuit.
Is the voltage above 11.6 volts?All
Ye s®Go To 3
No®Repair open Fused B(+) Circuit. (check Ignition Switch Fuse in
PDC).
Perform Powertrain Verification Test VER-1A.
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TEST ACTION APPLICABILITY
3 Ignition Off.
Ensure the Transmission is in Park.
With the DRB, read the Park/Neutral Position Switch.
Does the Switch show Park?All
Ye s®Go To 4
No®Repair Park/Neutral Switch.
Perform Powertrain Verification Test VER-1A.
4 Ignition Off.
Disconnect the Starter Relay Connector.
Note: Check connectors - Clean/repair as necessary.
Using an ohmmeter, test the Starter Relay Terminals for resistance.
Is the resistance above 100 ohms?All
Ye s®Replace the Starter Relay.
Perform Powertrain Verification Test VER-1A.
No®Go To 5
5 Ignition Off
Disconnect the Starter Relay Connector.
Note: Check connectors - Clean/repair as necessary.
With a voltmeter, probe Ignition Switch Output Circuit.
While attempting to crank the engine, read the Voltmeter.
Is the voltage above 10 volts?All
Ye s®Go To 6
No®Repair the open Ignition Switch Output (Start) Circuit.
Perform Powertrain Verification Test VER-1A.
6 Ignition Off.
Disconnect the Starter Relay Connector.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
With an ohmmeter, test the Starter Relay Control Circuit for resistance.
Is the resistance above 5.0 ohms?All
Ye s®Repair the open Starter Relay Control Circuit.
Perform Powertrain Verification Test VER-1A.
No®Go To 7
7 Ignition Off
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Warning: The Transmission must be in park and the Parking Brake must be
on for the next step.
Warning: The Engine may be cranked in the next step. Keep away form
moving Engine parts.
Connect a jumper wire between the Starter Relay Control Circuit and ground.
Briefly turn the Ignition to the crank position and then release.
Did the Engine crank?All
yes
Go To 8
no
Replace the Starter Relay.
Perform Powertrain Verification Test VER-1A.
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* NO CRANK CONDITION ÐContinued
ProCarManuals.com