Chrysler PT Cruiser. Manual - part 244

TEST

ACTION

APPLICABILITY

Turn the ignition on.
With the DRBIII

t, use the ETC System Test to open and close the throttle. Fully open

and fully close the throttle several times.
Monitor the Throttle Position Sensor Input voltage.
Is the voltage change smooth as the throttle opens and closes?

All

Yes

→ Go To 13

→ Replace the ETC Assembly.

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

tparameters related to the DTC while wiggling the wiring harness. Look for

parameter values to change and/or a DTC to set.
Review the DRBIII

t Freeze Frame information. If possible, try to duplicate the

conditions under which the DTC was set.
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.

→ Test Complete.

DRIVEABILITY - 1.6L GAS

P0122-THROTTLE POSITION SENSOR CIRCUIT #1 LOW —

Continued

Symptom List:

P0123-THROTTLE POSITION SENSOR CIRCUIT #1 HIGH
P0223-THROTTLE POSITION SENSOR CIRCUIT #2 HIGH

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be P0123-THROTTLE POSITION
SENSOR CIRCUIT #1 HIGH.

When Monitored and Set Condition:

P0123-THROTTLE POSITION SENSOR CIRCUIT #1 HIGH

When Monitored:

With the ignition on.

Set Condition:

Throttle Position Sensor Signal circuit voltage is greater than 4.9 volts for

25 ms.

P0223-THROTTLE POSITION SENSOR CIRCUIT #2 HIGH

When Monitored:

With the ignition on.

Set Condition:

Throttle Position Sensor #2 Signal circuit voltage is greater than 4.9 volts

for 25 ms.

POSSIBLE CAUSES

THROTTLE POSITION SENSOR SWEEP

INTERMITTENT CONDITION

TP SENSOR SIGNAL CIRCUIT SHORTED TO 5 VOLT SUPPLY CIRCUIT

TP SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE

TP SENSOR INTERNAL FAILURE

(K922) SENSOR GROUND CIRCUIT OPEN

TP SENSOR SIGNAL CIRCUIT OPEN

PCM

TEST

ACTION

APPLICABILITY

Start the engine.
With the DRBIII

t, read the TP Sensor voltage.

Is the voltage above 4.5 volts?

All

Yes

→ Go To 2

→ Go To 8

DRIVEABILITY - 1.6L GAS

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Disconnect the ETC Assembly harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the TP Sensor Signal circuit and the 5 Volt Supply
circuit.
Is the resistance below 100 ohms?

All

Yes

→ Repair the Throttle Position Sensor Signal circuit for a short to

the 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Go To 3

Turn the ignition off.
Disconnect the ETC Assembly harness connector.
Turn the ignition on.
Measure the voltage of the TP Sensor Signal circuit.
Is the voltage above 5.2 volts?

All

Yes

→ Repair the Throttle Position Sensor Signal circuit for a short to

battery voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Go To 4

Turn the ignition off.
Disconnect the ETC Assembly harness connector.
Connect a jumper wire between the TP Sensor Signal circuit and the TP Sensor
Ground circuit.
With the DRBIII

t, monitor the TP Sensor voltage.

Turn the ignition on.
Is the voltage below 0.5 volt?

All

Yes

→ Replace the ETC Assembly.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Go To 5

Turn the ignition off.
Disconnect the ETC Assembly harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the (K922) TP Sensor Ground circuit.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 6

→ Repair the open in the (K922) Throttle Position Sensor Ground

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

Turn the ignition off.
Disconnect the ETC Assembly harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the TP Sensor Signal circuit.
Is the resistance below 5 ohms?

All

Yes

→ Go To 7

→ Repair the Throttle Position Sensor Signal circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

DRIVEABILITY - 1.6L GAS

P0123-THROTTLE POSITION SENSOR CIRCUIT #1 HIGH —

Continued

TEST

ACTION

APPLICABILITY

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.

Turn the ignition on.
With the DRBIII

t, use the ETC System Test to open and close the throttle. Fully open

and fully close the throttle several times.
Monitor the Throttle Position Sensor Input voltage.
Is the voltage change smooth as the throttle opens and closes?

All

Yes

→ Go To 9

→ Replace the ETC Assembly.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DRBIII

t Freeze Frame information. If possible, try to duplicate the

All

Yes

→ Repair as necessary

Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.

→ Test Complete.

DRIVEABILITY - 1.6L GAS

P0123-THROTTLE POSITION SENSOR CIRCUIT #1 HIGH —

Continued

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