Dodge Ram Truck 1500-2500-3500. Manual — part 281

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Fasten Seat Belt Indicator Warning - The EMIC transducer will generate repetitive chimes at a slow rate to
announce that a hard wired input from the seat belt switch indicates that the driver side front seat belt is not
fastened with the ignition switch in the On position. The chime warning system also supports the enhanced
seatbelt reminder (beltminder) when this feature is enabled. (Refer to 8 - ELECTRICAL/INSTRUMENT CLUS-
TER/SEATBELT INDICATOR - OPERATION).

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Head/Park Lamps-On Warning - The EMIC transducer will generate repetitive chimes at a fast rate to indi-
cate that hard wired inputs from the driver door ajar switch, the headlamp switch, and the ignition switch indi-
cate that the exterior lamps are turned On with the driver side front door opened and the ignition switch in the
Off position. The chimes will continue to sound until the exterior lamps are turned Off, the driver side front door
is closed, or the ignition switch is turned to the On position, or the battery saver (load shed) time-out expires,
whichever occurs first.

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Key-In-Ignition Warning - The EMIC transducer will generate repetitive chimes at a fast rate to announce that
the hard wired inputs from the driver door ajar switch, the ignition switch, and the key-in ignition switch circuitry
of the ignition switch indicate that the key is in the ignition lock cylinder with the driver side front door open and
the ignition switch in the Off position. The chimes will continue to sound until the key is removed from the
ignition lock cylinder, the driver side front door is closed, or the ignition switch is turned to the On position,
whichever occurs first.

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Low Fuel Indicator Warning - The EMIC transducer will generate one short chime tone when the “Low Fuel”
indicator is illuminated by the instrument cluster circuitry. This chime will only occur once during any ignition
cycle.

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Low Oil Pressure Warning (Diesel Engine Only) - The EMIC transducer will generate repetitive chimes at a
fast rate when the “Check Gauges” indicator is illuminated for a low oil pressure condition. The instrument
cluster uses engine speed and oil pressure message inputs received from the diesel Engine Control Module
(ECM) over the PCI data bus indicating that the engine is running and that the oil pressure is low to illuminate
the “Check Gauges” indicator. The chimes will continue to sound for five seconds, until the engine oil pressure
message indicates that the oil pressure is not low, or until the engine speed message indicates that the engine
is not running, whichever occurs first. This chime will only occur once during any ignition cycle.

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Low Wash Indicator Warning - The EMIC transducer will generate one short chime when the “Low Washer
Fluid” indicator is illuminated by the instrument cluster circuitry. This chime will only occur once during any
ignition cycle.

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Overspeed Warning - The EMIC transducer will generate repetitive chimes at a slow rate to indicate that the
vehicle speed is over a pre-programmed speed value. The EMIC monitors electronic vehicle speed messages
received over the PCI data bus. This feature is only enabled on an EMIC that has been programmed with a
Middle East Gulf Coast Country (GCC) country code.

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Park Brake Reminder - The EMIC transducer will generate ten repetitive chimes at a slow rate to announce
that the hard wired input from the park brake switch and a vehicle speed message input received over the PCI
data bus indicate that the park brake is applied and the vehicle is moving. This chime will repeat each time the
input conditions are met.

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Sentry Key “Customer Learn” Mode Announcement - The EMIC transducer will generate one short chime
to confirm that an electronic “Customer Learn” mode message has been received over the PCI data bus to
indicate the Sentry Key Immobilizer Module (SKIM) is prepared for programming additional sentry key tran-
sponders. This chime feature is only active on vehicles equipped with the optional Sentry Key Immobilizer
System (SKIS), and sold in markets where “Customer Learn” programming is an allowed feature.

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Trans Overtemp Indicator Warning (Automatic Transmission Only) - The EMIC transducer will generate
repetitive chimes at a slow rate when the “Trans Temp” indicator is illuminated by the instrument cluster cir-
cuitry for a high or critical transmission fluid temperature condition. This chime will repeat each time the trans
overtemp indicator is cycled from Off to On.

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Turn Signal/Hazard Warning Flasher Emulation - The EMIC relay will generate repetitive clicks at a slow
rate to emulate an electromechanical flasher when the turn signal or hazard warning system are operating.
The EMIC relay will generate repetitive clicks at a fast rate to indicate that the right or left turn signal are
operating with one or more bulbs inoperative. In either case, the clicks will continue until the turn signal and
hazard warning systems are turned off.

8B - 14

CHIME/BUZZER - SERVICE INFORMATION

DR/DH

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Turn Signal On Warning - The EMIC transducer will generate repetitive chimes at a slow rate to indicate that
a turn signal has been active continuously for 1.6 kilometers (1 mile) with the vehicle speed greater than 22
kilometers-per-hour (15 miles-per hour). Vehicles built for markets other than the United States and Canada
have a revised distance threshold of 4 kilometers for this feature. The chime will continue until the turn signal
input becomes inactive or until the vehicle speed message indicates that the speed is less than 22 kilometers-
per-hour (15 miles-per-hour), whichever occurs first. The hazard warning flashers will not activate this chime
feature.

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Warning Indicator Announcement - The EMIC transducer will generate one short chime each time the
“Check Gauges” indicator is illuminated by the instrument cluster circuitry. The “Check Gauges” indicator may
be illuminated when any critical engine or transmission systems are operating outside of their normal param-
eters. The instrument cluster monitors electronic messages received over the PCI data bus to determine when
to illuminate the “Check Gauges” indicator.

The EMIC provides chime service for all available features in the chime warning system. The EMIC relies upon its
internal programming, numerous hard wired inputs, and electronic message inputs received from other modules
over the PCI data bus network to provide the chime warning system features. The internal programming of the
EMIC determines the priority of each chime request input that is received, as well as the rate and duration of each
chime that is to be generated.

The hard wired chime warning system inputs to the EMIC may be diagnosed and tested using conventional diag-
nostic tools and methods. However, conventional diagnostic methods may not prove conclusive in the diagnosis of
the EMIC, the PCI data bus, or the electronic messages received by the EMIC from other modules for control of the
chime warning system. The most reliable, efficient and accurate means to diagnose the EMIC, the PCI data bus, or
the electronic message inputs used for the chime warning system requires the use of a diagnostic scan tool. Refer
to the appropriate diagnostic information.

DIAGNOSIS AND TESTING

CHIME WARNING SYSTEM

WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental
restraint system before attempting any steering wheel, steering column, airbag, seat belt tensioner, impact
sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative
(ground) cable, then wait two minutes for the system capacitor to discharge before performing further diag-
nosis or service. This is the only sure way to disable the supplemental restraint system. Failure to take the
proper precautions could result in accidental airbag deployment.

The hard wired chime warning system inputs to the ElectroMechanical Instrument Cluster (EMIC), as well as other
hard wired circuits for this system may be diagnosed and tested using conventional diagnostic tools and methods.
Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and con-
nector repair procedures, details of wire harness routing and retention, connector pin-out information and location
views for the various wire harness connectors, splices and grounds.

However, conventional diagnostic methods may not prove conclusive in the diagnosis of the EMIC, the Program-
mable Communications Interface (PCI) data bus, or the electronic message inputs used by the EMIC to provide
chime warning system service. The most reliable, efficient, and accurate means to diagnose the EMIC, the PCI data
bus, and the electronic message inputs for the chime warning system requires the use of a diagnostic scan tool.
Refer to the appropriate diagnostic information.

DR/DH

CHIME/BUZZER - SERVICE INFORMATION

8B - 15

CONDITION

POSSIBLE CAUSES

CORRECTION

NO SEAT BELT WARNING

CHIME WITH SEAT BELT

UNBUCKLED, BUT OTHER

CHIME FEATURES OK

1. Seat belt switch ground
circuit open.

1. Check for continuity between the ground
circuit for the driver seat belt switch and a
good ground. Repair open ground circuit, if
required.

2. Seat belt switch sense circuit
open.

2. Check for continuity between the seat
belt switch sense circuit for the driver seat
belt switch and the instrument cluster
connector. Repair the open seat belt switch
sense circuit, if required.

3. Faulty seat belt switch.

3. Check for continuity between the ground
circuit and the driver seat belt switch sense
circuit of the seat belt switch. There should
be continuity with the seat belt unbuckled.
Replace the faulty seat belt, if required.

SEAT BELT WARNING CHIME

WITH SEAT BELT BUCKLED

1. Seat belt switch sense circuit
shorted.

1. With the driver seat belt switch and the
instrument cluster connector disconnected,
there should be no continuity between the
seat belt switch sense circuit and a good
ground. Repair the shorted seat belt switch
sense circuit, if required.

2. Faulty seat belt switch.

2. Check for continuity between the ground
circuit cavity and the seat belt switch sense
circuit of the driver seat belt switch. There
should be no continuity with the seat belt
buckled. Replace the faulty seat belt, if
required.

NO KEY-IN IGNITION

WARNING CHIME, BUT

OTHER CHIME FEATURES OK

1. Driver door ajar switch sense
circuit open.

1. Check for continuity between the driver
door ajar switch sense circuit connector and
the instrument cluster connector. Repair the
open driver door ajar switch sense circuit, if
required.

2. Key-in ignition switch sense
circuit open.

2. Check for continuity between the key-in
ignition switch sense circuit connector and
instrument cluster connector. Repair the
open key-in ignition switch sense circuit, if
required.

3. Key-in ignition switch ground
circuit open.

3. Check for continuity between the ground
circuit cavity of the ignition switch connector
and a good ground. Repair the open ground
circuit, if required

4. Faulty ignition switch.

4. Check for continuity between the ground
circuit terminal and the key-in ignition switch
sense circuit terminal in the ignition switch
connector. There should be continuity with a
key in the ignition lock cylinder. Replace the
faulty ignition switch, if required.

8B - 16

CHIME/BUZZER - SERVICE INFORMATION

DR/DH

CONDITION

POSSIBLE CAUSES

CORRECTION

NO EXTERIOR LAMPS-ON
WARNING CHIME, BUT
OTHER CHIME FEATURES OK

1. Driver door ajar switch sense
circuit open.

1. Check for continuity between the driver
door ajar switch sense circuit connector and
the instrument cluster connector. Repair the
open driver door ajar switch sense circuit, if
required.

2. Headlamp switch signal
circuit open.

2. Check for continuity between the
headlamp switch output circuit connector
and the and the instrument cluster
connector. Repair the open headlamp
switch signal circuit, if required.

NO CHIMES AND OTHER

INSTRUMENT CLUSTER

FEATURES ERRATIC OR

DISABLED

1. Instrument cluster ground
circuit(s) open.

1. Check for continuity between the ground
circuits of the instrument cluster connector
and a good ground. Repair the open ground
circuits(s), if required.

2. Instrument cluster fused B(+)
circuit(s) open.

2. Check for battery voltage at the B(+)
circuits of the instrument cluster connector.
Repair the open fused B(+) circuit(s), if
required.

3. Instrument cluster fused
ignition switch output (run-start)
circuit open.

3. With the ignition switch in the On
position, check for battery voltage at the
fused ignition switch output (run-start) circuit
of the instrument cluster connector. Repair
the open fused ignition switch output
(run-start) circuit, if required.

4. Faulty instrument cluster.

4. Replace the faulty instrument cluster, if
required.

NO CHIMES, BUT ALL OTHER

INSTRUMENT CLUSTER

FEATURES OK

1. Faulty instrument cluster.

1. Replace the faulty instrument cluster, if
required.

DR/DH

CHIME/BUZZER - SERVICE INFORMATION

8B - 17