Dodge Ram. Manual — part 64

Symptom:

*KEY IN IGNITION AND DRIVER’S DOOR OPEN CHIME INOPER-
ATIVE

POSSIBLE CAUSES

OBSERVE THE KEY-IN IGNITION SWITCH STATUS

KEY-IN IGNITION SWITCH OPEN

KEY-IN IGNITION SWITCH GROUND CIRCUIT OPEN

KEY-IN IGNITION SWITCH SENSE CIRCUIT OPEN

INSTRUMENT CLUSTER - INCORRECT KEY-IN IGNITION SWITCH STATUS

TEST

ACTION

APPLICABILITY

1

The driver’s door ajar switch must be operational for the result of this test to be valid.
NOTE: Ensure that the Key is still in the Ignition Switch.
With the DRBIII

t enter Instrument Cluster Input Outputs and read the Key-In Ign

Sw.
Does the DRB display: KEY-IN IGN SW: CLOSED?

All

Yes

→ Replace and program the Instrument Cluster in accordance with

the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 2

2

Turn the ignition off.
Disconnect the Ignition Switch harness connector.
Turn all lights off.
Measure the resistance between ground and the ground circuit in the ignition switch
harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 3

No

→ Repair the ground circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

3

Connect the ignition switch connector if disconnected.
Turn the ignition on.
With the ignition switch connector connected, back jumper the Key-In Ignition
Switch Sense circuit to ground at the ignition switch connector.
With the DRBIII

t, enter Instrument Cluster Input/Outputs and observe the Key-In

Ign Sw status.
Does the DRBIII display Key-In Ign SW: Closed?

All

Yes

→ Replace the Ignition Switch.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 4

253

CHIME

TEST

ACTION

APPLICABILITY

4

Turn the ignition off.
Disconnect the Ignition Switch harness connector.
Disconnect the Instrument Cluster C3 harness connector.
Measure the resistance of the Key-In Ignition Switch Sense circuit between the
ignition switch connector and the Instrument Cluster C3 connector .
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 5

No

→ Repair the Key-In Ignition Switch Sense circuit for an open

Perform BODY VERIFICATION TEST - VER 1.

5

If there are no possible causes remaining, view repair.

All

Repair

Replace and program the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

254

CHIME

*KEY IN IGNITION AND DRIVER’S DOOR OPEN CHIME INOPERATIVE
—

Continued

Symptom:

*VEHICLE SPEED WARNING CHIME PROBLEM

POSSIBLE CAUSES

INCORRECT COUNTRY CODE PROGRAMMED IN INSTRUMENT CLUSTER

INSTRUMENT CLUSTER

TEST

ACTION

APPLICABILITY

1

Note: The high speed warning chime is for Gulf Coast Countries only.
With the DRBIII

t in Miscellaneous check the Instrument Cluster country code

setting.
Is the country code incorrect?

All

Yes

→ Program the correct country code setting.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Replace and program the Instrument Cluster in accordance with

the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

255

CHIME

Symptom List:

FCM - BUS SHORTED TO BATTERY
FCM - BUS SHORTED TO GROUND

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be FCM - BUS SHORTED TO
BATTERY.

When Monitored and Set Condition:

FCM - BUS SHORTED TO BATTERY

When Monitored:

Continuously

Set Condition:

Anytime the FCM detects a short to battery on the PCI Bus circuit.

FCM - BUS SHORTED TO GROUND

When Monitored:

Continuously

Set Condition:

Anytime the FCM detects a short to ground on the PCI Bus circuit.

POSSIBLE CAUSES

INTERMITTENT CONDITION

TEST

ACTION

APPLICABILITY

1

NOTE: For this code to be active, the DRB will not be able to communicate
with any modules on the vehicle (except the PCM/ECM).
NOTE: Clear the code. If this code continues to set and the DRB can still
communicate with the FCM, it will be necessary to replace the FCM.
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, wiggle the wiring
harnesses. This is to try and duplicate the complete bus failure condition.
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 BODY VERIFICATION TEST - VER 1.

No

→ Test Complete.

256

COMMUNICATION