Chrysler PT Cruiser. Manual - part 267

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 - 4.

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

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

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 - 4.

→ Test Complete.

158

DRIVEABILITY - 1.6L GAS

P0580-SPEED CONTROL SWITCH ALWAYS LOW —

Continued

Symptom:

P0625-GENERATOR FIELD CONTROL CIRCUIT LOW

When Monitored and Set Condition:

P0625-GENERATOR FIELD CONTROL CIRCUIT LOW

When Monitored:

With the engine running for more than 25 seconds.

Set Condition:

When the Generator Field Circuit is open or shorted to ground.

POSSIBLE CAUSES

WIRING HARNESS INTERMITTENT

(K20) GENERATOR FIELD DRIVER CIRCUIT SHORTED TO GROUND

(K20) GENERATOR FIELD DRIVER CIRCUIT OPEN

GENERATOR FIELD

GENERATOR FIELD COIL OPEN

PCM

TEST

ACTION

APPLICABILITY

NOTE: Verify that the battery is capable of passing a load test and is fully
charged before continuing.
Turn the ignition on.
With the DRBIII

t, actuate the Generator Field Driver circuit.

Using a 12-volt test light connected to ground, backprobe the Generator Field Driver
circuit in the back of the Generator.
Does the test light illuminate brightly and flash?

All

Yes

→ Go To 2

→ Go To 3

Turn the ignition off.
Using a schematic as a guide, inspect the related Wiring and Connectors.
Turn the ignition on, engine not running.
With the DRBIII

t clear DTCs. Actuate the Generator Field driver circuit.

Wiggle test the wiring harness from the Generator to the PCM.
With the DRBIII

t, read DTC’s.

Did the DTC reset?

All

Yes

→ Repair as necessary .

Perform POWERTRAIN VERIFICATION TEST VER - 3 - 1.6L.

→ Test Complete.

159

DRIVEABILITY - 1.6L GAS

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the Generator Field harness connector.
Measure the resistance of the (K20) Generator Field Driver circuit from PCM
harness connector to ground.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the short to ground in the (K20) Generator Field Driver

circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 3 - 1.6L.

→ Go To 4

Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the Generator Field harness connector.
Measure the resistance of the (K20) Generator Field Driver circuit from the PCM
harness connector to the Generator Field harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 5

→ Repair the open in the (K20) Generator Field Driver circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 3 - 1.6L.

Turn the ignition off.
Disconnect the Generator Field harness connector.
Measure resistance of the Generator Field Driver terminal on the Generator to
ground.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair or replace the shorted Generator as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 3 - 1.6L.

→ Go To 6

Turn the ignition off.
Disconnect the Generator Field harness connector.
Measure the resistance across the Generator Field Terminals at the Generator.
Is the resistance above 15.0 ohms?

All

Yes

→ Replace the Generator.

Perform POWERTRAIN VERIFICATION TEST VER - 3 - 1.6L.

→ Go To 7

All

Repair

Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 3 - 1.6L.

160

DRIVEABILITY - 1.6L GAS

P0625-GENERATOR FIELD CONTROL CIRCUIT LOW —

Continued

Symptom:

P0626-GENERATOR FIELD CONTROL CIRCUIT HIGH

When Monitored and Set Condition:

P0626-GENERATOR FIELD CONTROL CIRCUIT HIGH

When Monitored:

With the engine running for more than 25 seconds.

Set Condition:

When the Generator Field circuit is shorted to B+.

POSSIBLE CAUSES

WIRING HARNESS INTERMITTENT

(K20) GENERATOR FIELD CKT SHORT TO VOLTAGE

GENERATOR

TEST

ACTION

APPLICABILITY

NOTE: Verify that the battery is capable of passing a load test and is fully
charged before continuing.
Turn the ignition on.
With the DRBIII

t, actuate the Generator Field Driver circuit.

Using a 12-volt test light connected to ground, backprobe the Generator Field Driver
circuit in the back of the Generator.
Does the test light illuminate brightly and flash?

All

Yes

→ Go To 2

→ Go To 3

Turn the ignition off.
Using a schematic as a guide, inspect the related Wiring and Connectors.
Turn the ignition on, engine not running.
With the DRBIII

t actuate the Generator Field Driver circuit.

Wiggle the wiring harness from the Generator to PCM.
With the DRBIII

t, read DTC’s.

Did the DTC reset?

All

Yes

→ Repair as necessary .

Perform POWERTRAIN VERIFICATION TEST VER - 3 - 1.6L.

→ Test Complete.

Turn the ignition off.
Disconnect PCM harness connector.
Turn the ignition on.
Using a 12-volt test light connected to Ground, backprobe the (K20) Generator Field
circuit at the PCM harness connector.
Does the test light illuminate brightly?

All

Yes

→ Repair the short to voltage in the (K20) Generator Field Driver

circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 3 - 1.6L.

→ Go To 4

161

DRIVEABILITY - 1.6L GAS

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