Chrysler PT Cruiser. Manual — part 192
TEST
ACTION
APPLICABILITY
13
Turn the ignition off.
Disconnect the Fuel Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Fuel Pressure Sensor Signal circuit.
Is the resistance below 10.0 ohms?
All
Yes
→ Go To 14
No
→ Repair the Fuel Pressure Sensor Signal circuit for an open.
Perform NO START VERIFICATION - VER-1.
14
Turn the ignition off.
Disconnect the Fuel Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Fuel Pressure Sensor 5-volt Supply circuit.
Is the resistance below 10.0 ohms?
All
Yes
→ Go To 15
No
→ Repair the Fuel Pressure Sensor 5-volt Supply circuit for an open.
Perform NO START VERIFICATION - VER-1.
15
Turn the ignition off.
Disconnect the Fuel Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Sensor Ground circuit.
Is the resistance below 10.0 ohms?
All
Yes
→ Replace the Fuel Pressure Sensor in accordance with the Service
Information.
Perform NO START VERIFICATION - VER-1.
No
→ Repair the Sensor Ground circuit for an open.
Perform NO START VERIFICATION - VER-1.
248
DRIVEABILITY - DIESEL
*ENGINE CRANKS BUT WILL NOT START —
Continued
Symptom:
*ENGINE WILL NOT CRANK
POSSIBLE CAUSES
BATTERY CABLE HIGH RESISTANCE
BATTERY CABLES
CLUTCH INTERLOCK SWITCH
CLUTCH INTERLOCK SWITCH SIGNAL CIRCUIT OPEN
ECM
MECHANICAL PROBLEM
OPEN FUSED BATTERY (+) CIRCUIT
OPEN IGNITION SWITCH START OUTPUT
SKIM CODES PRESENT
STARTER MOTOR
STARTER RELAY
STARTER RELAY CONTROL CIRCUIT OPEN
STARTER RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
STARTER RELAY GROUND CIRCUIT OPEN
STARTER RELAY OUTPUT CIRCUIT OPEN
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
NOTE: The battery must be fully charged before diagnosing a no crank
condition.
Inspect the battery cables for corrosion, looseness or other problems.
Is there evidence of problems?
All
Yes
→ Repair as necessary.
Perform NO START VERIFICATION - VER-1.
No
→ Go To 2
2
Turn the ignition on.
With the DRBIII
t, read the SKIM DTCs.
Does the DRBIII
t display any SKIM DTCs?
All
Yes
→ Refer to symptom list for problems related to SKIM.
Perform NO START VERIFICATION - VER-1.
No
→ Go To 3
249
DRIVEABILITY - DIESEL
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Remove the Starter Relay from the PDC.
WARNING: THE TRANSMISSION MUST BE IN NEUTRAL AND THE PARK
BRAKE MUST BE SET FOR THIS TEST.
WARNING: THE ENGINE MAY CRANK IN THE NEXT STEP. WHEN THE
ENGINE IS CRANKING, DO NOT STAND IN A DIRECT LINE WITH THE
FAN. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR FAN.
DO NOT WEAR LOOSE CLOTHING.
Momentarily jumper Starter Relay connector cavities 30 and 87 in the PDC
connector.
Did the engine crank?
All
Yes
→ Go To 4
No
→ Go To 12
4
Turn the ignition off.
Remove the Starter Relay from the PDC.
Install a substitute relay in place of the Starter Relay.
Attempt to start the engine.
Does the engine crank?
All
Yes
→ Replace the Starter Relay.
Perform NO START VERIFICATION - VER-1.
No
→ Go To 5
5
Remove the Starter Relay from the PDC.
Using a 12-volt test light connected to ground, check the Ignition Switch Start
Output circuit while turning the ignition switch to the START position.
Does the test light illuminate with the ignition switch in the START position?
All
Yes
→ Go To 6
No
→ Repair the Ignition Switch Output circuit for an open.
Perform NO START VERIFICATION - VER-1.
6
Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the Starter Relay from the PDC.
Remove the ASD Relay from the PDC.
Using a jumper wire, connect ASD Relay connector cavities 30 and 87 in the PDC.
Turn the ignition on.
Measure the voltage of the Starter Relay Control circuit.
Is the voltage above 1.0 volt?
All
Yes
→ Repair the Starter Relay Control circuit for a short to voltage.
Perform NO START VERIFICATION - VER-1.
No
→ Go To 7
7
Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the Starter Relay from the PDC.
Measure the resistance of the Starter Relay Control circuit.
Is the resistance below 10.0 ohms?
All
Yes
→ Go To 8
No
→ Repair the Starter Relay Control circuit for an open.
Perform NO START VERIFICATION - VER-1.
250
DRIVEABILITY - DIESEL
*ENGINE WILL NOT CRANK —
Continued
TEST
ACTION
APPLICABILITY
8
Turn the ignition off.
Disconnect the ECM harness connectors.
Measure the resistance between ground and ECM harness connector cavity 102.
While observing the ohmmeter, fully depress and release the clutch pedal several
times.
NOTE: The ohmmeter should change from above 1000 ohms to below 20
ohms when depressing and releasing the clutch pedal.
Does the ohmmeter change from above 1000 ohms to below 20.0 ohms as indicated in
the NOTE?
All
Yes
→ Replace the ECM in accordance with the Service Information.
Perform NO START VERIFICATION - VER-1.
No
→ Go To 9
9
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Clutch Switch harness connector.
Measure the resistance of the Clutch Interlock Switch Signal circuit.
Is the resistance below 10.0 ohms?
All
Yes
→ Go To 10
No
→ Repair the Clutch Interlock Switch Signal circuit for an open.
Perform NO START VERIFICATION - VER-1.
10
Turn the ignition off.
Disconnect the Clutch Switch harness connector.
Connect a jumper wire between the Clutch Interlock Switch Signal circuit and the
Ground circuit at the Clutch Switch harness connector.
With the transmission in neutral and the clutch fully depressed attempt to crank the
engine.
Does the engine crank?
All
Yes
→ Replace the Clutch Interlock Switch.
Perform NO START VERIFICATION - VER-1.
No
→ Go To 11
11
Turn the ignition off.
Disconnect the Clutch Switch harness connector.
Measure the resistance between ground and the Ground circuit at the Clutch Switch
harness connector.
Is the resistance below 10.0 ohms?
All
Yes
→ Replace the ECM in accordance with the Service Information.
Perform NO START VERIFICATION - VER-1.
No
→ Repair the Ground Circuit for an open.
Perform NO START VERIFICATION - VER-1.
12
Remove the Starter Relay from the PDC.
Using a 12-volt test light connected to ground, check the Fused B+ circuit in the
Starter Relay connector in the PDC.
Is the test light on?
All
Yes
→ Go To 13
No
→ Repair the Fused B(+) circuit for an open.
Perform NO START VERIFICATION - VER-1.
251
DRIVEABILITY - DIESEL
*ENGINE WILL NOT CRANK —
Continued
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