Dodge Dakota (R1). Manual — part 167
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Turn the ignition on.
Measure the voltage of the A/C Pressure Sensor Signal circuit in the A/C Pressure
Sensor harness connector.
Is the voltage above 5.5 volts?
All
Yes
→
Repair the A/C Pressure Sensor Signal circuit for a short to
voltage.
Perform ROAD TEST VERIFICATION - VER - 2.
No
→
4
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Connect a jumper wire between the A/C Pressure Sensor Signal circuit and the
Sensor Ground circuit.
With the DRBIII
t, monitor the A/C Pressure Sensor voltage.
Turn the ignition on.
Is the voltage below 1.0 volt?
All
Yes
→
Replace the A/C Pressure Sensor.
Perform ROAD TEST VERIFICATION - VER - 2.
No
→
5
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the A/C Pressure Sensor Signal circuit between the A/C
Pressure Sensor harness connector and the PCM harness connector.
Is the resistance below 5 ohms?
All
Yes
→
No
→
Repair the A/C Pressure Sensor Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER - 2.
6
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Measure the resistance between ground and the Sensor Ground circuit.
Is the resistance below 30 ohms?
All
Yes
→
No
→
Repair the Sensor Ground circuit for an open.
Perform ROAD TEST VERIFICATION - VER - 2.
7
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 - 2.
203
HEATING & A/C
P1598-A/C PRESSURE SENSOR SIGNAL HIGH —
Continued
TEST
ACTION
APPLICABILITY
8
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 and at normal operating temperature, monitor the DRB
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 DTC When Monitored and Set Conditions. 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 ROAD TEST VERIFICATION - VER - 2.
No
→
Test Complete.
204
HEATING & A/C
P1598-A/C PRESSURE SENSOR SIGNAL HIGH —
Continued
Symptom:
P1599-A/C PRESSURE SENSOR SIGNAL LOW
When Monitored and Set Condition:
P1599-A/C PRESSURE SENSOR SIGNAL LOW
When Monitored:
With the engine running and the A/C on.
Set Condition:
The voltage on the A/C Pressure Sensor Signal circuit drops below 0.06
volts for more than 2.8 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
5-VOLT SUPPLY CIRCUIT OPEN
A/C PRESSURE SENSOR
A/C PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
A/C PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT
PCM - 5-VOLT SUPPLY CIRCUIT
PCM - A/C PRESSURE SENSOR SIGNAL
TEST
ACTION
APPLICABILITY
1
NOTE: Ensure the A/C refrigerant System is properly charged per the
Service Information.
Start the engine.
With the DRBIII
t, read the A/C Pressure Sensor voltage.
Is the voltage below 0.07 volt?
All
Yes
→
No
→
2
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Turn the ignition on.
Measure the voltage of the 5-Volt Supply circuit in the A/C Pressure Sensor harness
connector.
Is the voltage between 4.5 and 5.5 volts?
All
Yes
→
No
→
205
HEATING & A/C
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
With the DRBIII
t, monitor the A/C Pressure Sensor voltage.
Turn the ignition on.
Is the voltage above 0.07 volt?
All
Yes
→
Replace the A/C Pressure Sensor.
Perform ROAD TEST VERIFICATION - VER - 2.
No
→
4
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the A/C Pressure Sensor Signal circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the A/C Pressure Sensor Signal circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER - 2.
5
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the A/C Pressure Sensor Signal circuit and the
Sensor Ground circuit in the A/C Pressure Sensor harness connector.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the A/C Pressure Sensor Signal circuit for a short to the
Sensor ground circuit.
Perform ROAD TEST VERIFICATION - VER - 2.
6
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 ROAD TEST VERIFICATION - VER - 2.
7
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the 5-Volt Supply circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the 5-Volt Supply circuit for a short to ground.
Perform ROAD TEST VERIFICATION - VER - 2.
206
HEATING & A/C
P1599-A/C PRESSURE SENSOR SIGNAL LOW —
Continued
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст