Part 2B
SEATBELT INDICATORA seatbelt indicator is standard equipment on all instrument clusters. The seatbelt indicator is located near the lower edge of the instrument cluster overlay, to the right of center. The seatbelt indicator consists of a stencil-like cutout of the International Control and Display Symbol icon for "Seat Belt" in the opaque layer of the instrument cluster overlay. The dark outer layer of the overlay prevents the indicator from being clearly visible when it is not illuminated. A red lens behind the cutout in the opaque layer of the overlay causes the icon to appear in red through the translucent outer layer of the overlay when the indicator is illuminated from behind by a Light Emitting Diode (LED) soldered onto the instrument cluster electronic circuit board. The seatbelt indicator is serviced as a unit with the instrument cluster.
The seatbelt indicator gives an indication to the vehicle operator of the status of the driver side front seatbelt. This indicator is controlled by a transistor on the instrument cluster circuit board based upon cluster programming and a hard wired input from the seatbelt switch in the driver side front seatbelt retractor through the seat belt indicator driver circuit. The seatbelt indicator Light Emitting Diode (LED) receives battery current on the instrument cluster electronic circuit board through the fused ignition switch output (run-start) circuit whenever the ignition switch is in the ON or Start positions;therefore, the indicator will always be OFF when the ignition switch is in any position except ON or Start. The LED only illuminates when it is provided a path to ground by the instrument cluster transistor.
The instrument cluster will turn ON the seatbelt indicator for the following reasons:
* Seatbelt Reminder Function - Each time the cluster receives a battery current input on the fused ignition switch output (run-start) circuit, the indicator will be illuminated as a seatbelt reminder for about seven seconds, or until the ignition switch is turned to the OFF position, whichever occurs first. This reminder function will occur regardless of the status of the seatbelt switch input to the cluster.
* Driver Side Front Seatbelt Not Buckled - Following the seatbelt reminder function, each time the cluster detects an open circuit on the seat belt indicator driver circuit (seatbelt switch open - seat- belt unbuckled) with the ignition switch in the Start or ON positions, the indicator will be illuminated. The seatbelt indicator remains illuminated until the seat belt indicator driver input to the cluster is closed to ground (seatbelt switch closed - seatbelt buckled), or until the ignition switch is turned to the OFF position, whichever occurs first.
* Actuator Test - Each time the cluster is put through the actuator test, the indicator will be turned ON, then OFF again during the bulb check portion of the test to confirm the functionality of the LED and the cluster control circuitry
The seatbelt switch input to the instrument cluster circuitry can be diagnosed using conventional diagnostic tools and methods. For further diagnosis of the seatbelt indicator or the instrument cluster circuitry that controls the LED.
SECURITY INDICATOR
A security indicator is standard equipment on all instrument clusters. However, on vehicles not equipped with the optional Vehicle Theft Security System (VTSS), this indicator is mechanically disabled. The security indicator is located near the lower edge of the instrument cluster overlay to the right of center. The security indicator consists of a stencil-like cutout of the word "SECURITY" in the opaque layer of the instrument cluster overlay. The dark outer layer of the overlay prevents the indicator from being clearly visible when it is not illuminated. A red lens behind the cutout in the opaque layer of the overlay causes the "SECURITY" text to appear in red through the translucent outer layer of the overlay when it is illuminated from behind by a Light Emitting Diode (LED) soldered onto the instrument cluster electronic circuit board. The security indicator is serviced as a unit with the instrument cluster.
The security indicator gives an indication to the vehicle operator when the Vehicle Theft Security System (VTSS) is arming or is armed. This indicator is controlled by a hard wired input to the instrument cluster from the Central Timer Module (CTM) on the VTSS indicator driver circuit. The security indicator Light Emitting Diode (LED) receives battery current on the instrument cluster electronic circuit board at all times through a non-switched fused B(+) circuit; therefore, the LED will remain functional regardless of the ignition switch position.
The LED only illuminates when it is provided a path to ground by the CTM. The security indicator will be illuminated for the following reasons:
* VTSS Indication - During the seventeen second VTSS arming function, the CTM will flash the security indicator ON and OFF repeatedly at a steady, fast rate to indicate that the VTSS is in the process of arming. Following successful VTSS arming, the CTM flashes the security indicator ON and OFF continuously at a slower rate to indicate that the VTSS is armed. The security indicator continues flashing at the slower rate until the VTSS is disarmed or triggered. If the VTSS alarm is triggered, the CTM will flash the security indicator at a steady, fast rate for up to eighteen minutes or until the triggering condition is removed, before returning to the slower, armed flash rate.
* Actuator Test - Each time the instrument cluster is put through the actuator test, the security indicator will be turned ON, then OFF again during the bulb check portion of the test to confirm the functionality of the LED and the cluster control circuitry.
The CTM provides a hard wired ground input to the instrument cluster circuitry through the VTSS indicator driver circuit whenever the ignition switch is in the OFF position and the VTSS is arming, armed, or triggered. For further diagnosis of the security indicator or the instrument cluster circuitry that controls the indicator. The VTSS indicator driver circuit input to the instrument cluster can be diagnosed using conventional diagnostic tools and methods. For proper diagnosis of the VTSS or the CTM, a DRB III scan tool is required. Refer to the appropriate diagnostic information.
TRANSMISSION TEMP INDICATOR
A transmission over-temperature indicator lamp is standard equipment on all instrument clusters. The transmission over-temperature indicator is located near the lower edge of the instrument cluster overlay, to the left of center. The transmission over-temperature indicator consists of a stencil-like cutout of the words "TRANS TEMP" in the opaque layer of the instrument cluster overlay. The dark outer layer of the overlay prevents the indicator from being clearly visible when it is not illuminated. A red lens behind the cutout in the opaque layer of the overlay causes the "TRANS TEMP" text to appear in red through the translucent outer layer of the overlay when the indicator is illuminated from behind by a Light Emitting Diode (LED) soldered onto the instrument cluster electronic circuit board. The transmission over- temperature indicator is serviced as a unit with the instrument cluster.
The transmission over-temperature indicator gives an indication to the vehicle operator when the transmission fluid temperature is excessive, which may lead to accelerated transmission component wear or failure. This indicator is controlled by a transistor on the instrument cluster circuit board based upon cluster programming and electronic messages received by the cluster from the Powertrain Control Module (PCM) over the Chrysler Collision Detection (CCD) data bus. The transmission over-temperature indicator Light Emitting Diode (LED) receives battery current on the instrument cluster electronic circuit board through the fused ignition switch output (run- start) circuit whenever the ignition switch is in the ON or Start positions; therefore, the LED will always be OFF when the ignition switch is in any position except ON or Start. The LED only illuminates when it is provided a path to ground by the instrument cluster transistor.
The instrument cluster will turn ON the transmission over-temperature indicator for the following reasons:
* Bulb Test - Each time the ignition switch is turned to the ON position the transmission over-temperature indicator is illuminated for about two seconds as a bulb test.
* Trans Over-Temp Lamp-ON Message - Each time the cluster receives a trans over-temp lamp-ON message from the PCM indicating that the transmission fluid temperature is 135 °C (275 °F) or higher, the transmission over-temperature indicator will be illuminated and a single chime tone is sounded. The lamp remains illuminated until the cluster receives a trans over-temp lamp-OFF message from the PCM, or until the ignition switch is turned to the OFF position, whichever occurs first. The chime tone feature will only repeat during the same ignition cycle if the transmission over-temperature indicator is cycled OFF and then ON again by the appropriate trans over- temp messages from the PCM.
* Actuator Test - Each time the cluster is put through the actuator test, the transmission over-temperature indicator will be turned ON, then OFF again during the bulb check portion of the test to confirm the functionality of the LED and the cluster control circuitry.
The PCM continually monitors the transmission temperature sensor to determine the transmission operating condition, then sends the proper messages to the instrument cluster. If the instrument cluster turns ON the transmission over-temperature indicator due to a high transmission oil temperature condition, it may indicate that the transmission and/or the transmission cooling system are being overloaded or that they require service. For further diagnosis of the transmission over-temperature indicator or the instrument cluster circuitry that controls the LED. For proper diagnosis of the transmission temperature sensor, the PCM, the CCD data bus, or the message inputs to the instrument cluster that control the transmission over-temperature indicator, a DRB III scan tool is required. Refer to the appropriate diagnostic information.
TURN SIGNAL INDICATOR
Two turn signal indicators, one right and one left, are standard equipment on all instrument clusters. The turn signal indicators are located near the lower edge of the instrument cluster overlay, one to each side of the speedometer. Each turn signal indicator consists of a stencil-like cutout of the International Control and Display Symbol icon for "Turn Warning" in the opaque layer of the instrument cluster overlay The dark outer layer of the overlay prevents these icons from being clearly visible when their lamps are not illuminated. The icons appear in green through the translucent outer layer of the overlay when the indicator is illuminated from behind by a replaceable incandescent bulb and bulb holder unit located on the instrument cluster electronic circuit board. The turn signal indicators are serviced as a unit with the instrument cluster.
The turn signal indicators give an indication to the vehicle operator that the turn signal (left or right indicator flashing) or hazard warning (both left and right indicators flashing) have been selected. These indicators are controlled by two individual hard wired inputs to the instrument cluster electronic circuit board. The turn signal indicator bulbs are grounded on the instrument cluster electronic circuit board at all times. The turn signal indicator bulbs only illuminate when they are provided with battery current by the turn signal and hazard warning circuitry of the combination flasher through separate left and right turn signal circuit inputs to the instrument cluster; therefore, these indicators can be illuminated, regardless of the ignition switch position.
The turn signal indicators are connected in series between ground and the output of the combination flasher circuitry, but in parallel with the other turn signal circuits. This arrangement allows the turn signal indicators to remain functional regardless of the condition of the other circuits in the turn signal and hazard warning system. The turn signal indicators can be diagnosed using conventional diagnostic tools and methods.
WASHER FLUID INDICATOR
A washer fluid indicator is standard equipment on all instrument clusters. The washer fluid indicator is located near the upper edge of the instrument cluster overlay to the left of center. The washer fluid indicator consists of a stencil-like cutout of the words "LOW WASH" in the opaque layer of the instrument cluster overlay. The dark outer layer of the overlay prevents the indicator from being clearly visible when it is not illuminated. An amber lens behind the cutout in the opaque layer of the overlay causes the "LOW WASH" text to appear in amber through the translucent outer layer of the overlay when the indicator is illuminated from behind by a Light Emitting Diode (LED) soldered onto the instrument cluster electronic circuit board. The washer fluid indicator is serviced as a unit with the instrument cluster.
The washer fluid indicator gives an indication to the vehicle operator when the fluid level in the washer fluid reservoir is low. This indicator is controlled by a transistor on the instrument cluster electronic circuit board based upon cluster programming and a hard wired washer fluid level switch input to the cluster. The washer fluid indicator Light Emitting Diode (LED) receives battery current on the instrument cluster electronic circuit board through the fused ignition switch output (run-start) circuit whenever the ignition switch is in the ON or Start positions; therefore, the indicator will always be OFF when the ignition switch is in any position except ON or Start. The LED only illuminates when it is provided a path to ground by the instrument cluster transistor.
The instrument cluster will turn ON the washer fluid indicator for the following reasons:
* Bulb Test - Each time the ignition switch is turned to the ON position the washer fluid indicator is illuminated for about two seconds as a bulb test.
* Washer Fluid Level Switch Input - Immediately after the bulb test, if the cluster senses ground on the washer fluid switch sense circuit for more than about thirty seconds, it turns ON the washer fluid indicator. Any time after the bulb test, the cluster must sense ground on the washer fluid switch sense circuit for more than about sixty seconds before it turns ON the indicator. Once illuminated, the indicator will remain illuminated until the ignition switch is cycled and the cluster senses an open circuit on the low washer fluid sense input. This strategy is intended to reduce the effect that fluid sloshing within the washer reservoir can have on reliable indicator operation.
* Actuator Test - Each time the cluster is put through the actuator test, the washer fluid indicator will be turned ON, then OFF again during the bulb check portion of the test to confirm the functionality of the LED and the cluster control circuitry
The washer fluid level switch is connected in series between ground and the washer fluid switch sense input to the instrument cluster. For more information on the washer fluid level switch. For further diagnosis of the washer fluid indicator or the instrument cluster circuitry that controls the indicator. The washer fluid level switch input to the cluster can be diagnosed using conventional diagnostic tools and methods.