Content .. 270 271 272 273 ..

Chrysler PT Cruiser. Manual - part 272

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Install a substitute relay in place of the ASD Relay.
With the DRBIII

t, erase DTCs.

Attempt to start the engine.
Does the engine start?

All

Yes

→ Replace the ASD Relay.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Go To 5

Turn the ignition off.
Remove the ASD Relay from the PDC.
Measure the voltage of the (A14) Fused B+ circuit in the PDC.
Is the voltage above 11.0 volts?

All

Yes

→ Go To 6

→ Repair the (A14) Fused B+ circuit. Check and replace any open

fuses.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

Turn the ignition off.
Remove the ASD Relay from the PDC.
Disconnect the PCM harness connector.
Measure the resistance of the (A142) ASD Output circuit in the PDC to ground.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 7

→ Repair the short to ground in the (A142) ASD Relay Output

circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

WARNING: WHEN THE ENGINE IS OPERATING, 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.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRBIII

parameters related to the DTC while wiggling the wiring harness. Check for the
engine stumble, stall or quite running.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?

All

Yes

→ Repair as necessary

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Go To 8

178

DRIVEABILITY - 1.6L GAS

P0688-ASD RELAY OUTPUT CIRCUIT LOW —

Continued

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Remove the ASD Relay from the PDC.
Disconnect the PCM harness connector.
Measure the resistance of the (A142) ASD Output circuit between the PDC and the
PCM harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 9

→ Repair the open in the (A142) ASD Relay Output circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

NOTE: Before Continuing: Disconnect the PCM harness connector and
check the related wiring terminals for corrosion, damage or terminal push
out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
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 - 5 - 1.6L.

All

Yes

→ Repair as necessary

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Test Complete.

179

DRIVEABILITY - 1.6L GAS

P0688-ASD RELAY OUTPUT CIRCUIT LOW —

Continued

Symptom:

P0690-ASD RELAY OUTPUT CIRCUIT HIGH

When Monitored and Set Condition:

P0690-ASD RELAY OUTPUT CIRCUIT HIGH

When Monitored:

With the ignition on.

Set Condition:

If the PCM detects high voltage on the ASD Relay Sense circuit for more

than 3.5 seconds, it will set this DTC.

POSSIBLE CAUSES

INTERMITTENT CONDITION

(A142) ASD RELAY OUTPUT SENSE CIRCUIT SHORTED TO VOLTAGE

ASD RELAY

POWERTRAIN CONTROL MODULE INTERNAL SHORT TO VOLTAGE

PCM

TEST

ACTION

APPLICABILITY

NOTE: Diagnose P0686 or P0687 - Auto Shutdown Relay Control Circuit first
if set along with this DTC.
With the DRBIII

t, erase the DTC.

Attempt to start the engine. If the engine will not start, crank the engine for at least
15 seconds. It may be necessary to repeat several times.
Does the DTC reset?

All

Yes

→ Go To 2

→ Go To 5

Turn the ignition off.
Remove the ASD Relay from the PDC.
Turn the ignition on.
Measure the voltage of the (A142) ASD Relay Output circuit in the PDC.
Is the voltage above 1.0 volts?

All

Yes

→ Go To 3

→ Go To 4

180

DRIVEABILITY - 1.6L GAS

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Remove the ASD Relay from the PDC.
Disconnect the PCM harness connector.
Turn the ignition on.
Measure the voltage of the (A142) ASD Relay Output circuit in the PDC.
Is the voltage above 1.0 volts?

All

Yes

→ Repair the short to voltage in the (A142) ASD Relay Output Sense

circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Replace and program the Powertrain Control Module in accor-

dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

Ensure the ASD Relay is secured in the PDC.
Turn the ignition on.
NOTE: The ASD Relay should switch ON at key on for approximately three
seconds. If no ignition reference is seen, it should switch OFF.
Disconnect the #1 Fuel Injector harness connector.
Measure the ASD Relay Output circuit in the Fuel Injector harness connector.
Is the voltage above 1.0 volt?

All

Yes

→ Replace the ASD Relay.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Replace and program the Powertrain Control Module in accor-

dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

All

Yes

→ Repair as necessary

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Test Complete.

181

DRIVEABILITY - 1.6L GAS

P0690-ASD RELAY OUTPUT CIRCUIT HIGH —

Continued

Content .. 270 271 272 273 ..