Dodge Dakota (R1). Manual — part 870

TEST

ACTION

APPLICABILITY

10

Turn the ignition off.
Verify the Clutch Cycling Switch operation per the service information.
Is the Clutch Cycling switch OK?

All

Yes

→

Go To

11

No

→

Replace the Clutch Cycling Switch.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

11

Turn the ignition off.
Verify the High Pressure Cut-Off Switch per the service information.
Is the High Pressure Cut-Off Switch OK?

All

Yes

→

Go To

12

No

→

Replace the High Pressure Cut-Off Switch.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

12

Turn the ignition off.
Verify the Low Pressure Switch operation per the service information.
Is the Low Pressure Switch OK?

All

Yes

→

Go To

13

No

→

Replace the Low Pressure Switch.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

13

Turn the ignition off.
Disconnect the A/C Clutch harness connector.
Remove the A/C Clutch Relay.
Note: Check connectors - Clean/repair as necessary.
Measure the A/C Clutch Relay Output from the Relay to the A/C Clutch Coil.
Is the resistance below 5.0 ohms?

All

Yes

→

Go To

14

No

→

Repair the open A/C Clutch Relay Output Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

14

Ignition on, engine not running.
With the DRBIII

t, actuate the A/C clutch relay.

Measure the A/C Clutch Relay Output at the A/C Clutch harness connector.
Does the voltage fluctuate between 0.0 and 11.0 volts?

All

Yes

→

Replace the A/C Clutch Coil.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→

Go To

15

15

Turn the ignition off.
Remove the A/C Clutch Relay.
Note: Check connectors - Clean/repair as necessary.
Measure the Fused B(+) at the Relay.
Is the voltage above 11.0 volts?

All

Yes

→

Go To

16

No

→

Repair the open Fused B(+) Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

212

HEATING & A/C

*CHECKING A/C SYSTEM OPERATION WITH NO DTC’S —

Continued

TEST

ACTION

APPLICABILITY

16

If there are no possible causes remaining, view repair.

All

Repair

Replace the A/C Clutch Relay.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

17

Turn the ignition off.
Verify the Clutch Cycling Switch operation per the service information.
Is the Clutch Cycling switch OK?

All

Yes

→

Go To

18

No

→

Replace the Clutch Cycling Switch.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

18

Turn the ignition off.
Verify the High Pressure Cut-Off Switch per the service information.
Is the High Pressure Cut-Off Switch OK?

All

Yes

→

Go To

19

No

→

Replace the High Pressure Cut-Off Switch.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

19

Turn the ignition off.
Verify the Low Pressure Switch operation per the service information.
Is the Low Pressure Switch OK?

All

Yes

→

Go To

20

No

→

Replace the Low Pressure Switch.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

20

Turn the ignition off.
Disconnect the A/C Clutch harness connector.
Remove the A/C Clutch Relay.
Note: Check connectors - Clean/repair as necessary.
Measure the A/C Clutch Relay Output from the Relay to the A/C Clutch Coil.
Is the resistance below 5.0 ohms?

All

Yes

→

Go To

21

No

→

Repair the open A/C Clutch Relay Output Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

21

Ignition on, engine not running.
With the DRBIII

t, actuate the A/C clutch relay.

Measure the A/C Clutch Relay Output at the A/C Clutch harness connector.
Does the voltage fluctuate between 0.0 and 11.0 volts?

All

Yes

→

Replace the A/C Clutch Coil.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→

Go To

22

213

HEATING & A/C

*CHECKING A/C SYSTEM OPERATION WITH NO DTC’S —

Continued

TEST

ACTION

APPLICABILITY

22

Turn the ignition off.
Remove the A/C Clutch Relay.
Note: Check connectors - Clean/repair as necessary.
Measure the Fused B(+) at the Relay.
Is the voltage above 11.0 volts?

All

Yes

→

Go To

23

No

→

Repair the open Fused B(+) Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

23

If there are no possible causes remaining, view repair.

All

Repair

Repair the open A/C Request Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

214

HEATING & A/C

*CHECKING A/C SYSTEM OPERATION WITH NO DTC’S —

Continued

Symptom List:

P1595-SPEED CONTROL SOLENOID CIRCUITS
P1683-SPD CTRL PWR RELAY; OR S/C 12V DRIVER CKT

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be P1595-SPEED CONTROL SOLE-
NOID CIRCUITS.

When Monitored and Set Condition:

P1595-SPEED CONTROL SOLENOID CIRCUITS

When Monitored:

With the ignition key on, the speed control switched on, the SET switch

pressed and the vehicle in drive gear moving above 35 MPH.

Set Condition:

The powertrain control module actuates the vacuum and vent solenoids

but they do not respond.

P1683-SPD CTRL PWR RELAY; OR S/C 12V DRIVER CKT

When Monitored:

With the ignition key on and the speed control switched on.

Set Condition:

The speed control power supply circuit is either open or shorted to ground.

POSSIBLE CAUSES

S/C POWER SUPPLY CIRCUIT SHORTED TO GROUND

GROUND CIRCUIT AT S/C SERVO CONNECTOR OPEN

S/C WIRING HARNESS INTERMITTENT PROBLEM (S/C VENT SOL AC)

S/C VACUUM SOLENOID CONTROL CIRCUIT OPEN

S/C VACUUM SOLENOID CONTROL CKT SHORT TO GROUND

S/C VENT SOLENOID CONTROL CIRCUIT OPEN

S/C VENT SOLENOID CONTROL CKT SHORT TO GROUND

S/C WIRING HARNESS INTERMITTENT PROBLEM (S/C VAC SOL AC)

S/C WIRING HARNESS OBSERVABLE PROBLEM

S/C SERVO (12V DRIVER CIRCUIT)

S/C SERVO (12V DRIVER CIRCUIT)

S/C POWER SUPPLY CIRCUIT OPEN

BRAKE SWITCH

BRAKE SWITCH OUT OF ADJUSTMENT

S/C BRAKE SWITCH OUTPUT CIRCUIT OPEN

S/C BRAKE SWITCH OUTPUT CIRCUIT SHORTED TO GROUND

PCM (12V DRIVER CIRCUIT)

215

SPEED CONTROL