Body Control Modules: Other Dodge Neon II

OCCUPANT RESTRAINT CONTROLLER

Occupant Restraint Controller (ORC) is located under center of floor console. It contains a microprocessor, an impact sensor and an energy storage capacitor. The microprocessor contains air bag system logic. Air bag system logic includes On-Board Diagnostics (OBD) capability. ORC communicates with other modules via the Programmable Communication Interface (PCI) bus circuit.

ORC microprocessor monitors impact sensor signal and air bag system electrical circuits to determine system readiness. If ORC detects a monitored system fault, a message is sent via PCI bus circuit to Electro-Mechanical Instrument Panel (EMIC) module to turn air bag indicator light on. ORC is preprogrammed to determine when deceleration rate signaled by impact sensor indicates an impact severe enough to require air bag system protection. When preprogrammed conditions are met, ORC sends a signal to deploy air bag system components.

The impact sensor is an accelerometer that senses the rate of vehicle deceleration, which provides verification of direction and severity of an impact. Impact sensor is calibrated for specific vehicle, and is only serviced as an integral part of ORC. ORC energy storage capacitor provides air bag system protection in severe secondary impact if initial impact has damaged or disconnected vehicle battery, but initial impact is not severe enough to deploy air bags.

EMIC module performs air bag indicator light check when ignition switch is turned to RUN or START position. EMIC module turns indicator light on for 6-8 seconds. Light turns off if ORC determines no system malfunctions exist. Light remains on if ORC determines an air bag system malfunction or if EMIC light circuit short to ground exists. If light turns on for more than 8 seconds and then goes off, an intermittent problem in air bag system is indicated. For additional information on air bag system, see AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS.

ANTI-LOCK BRAKE SYSTEM CONTROL MODULE

Anti-Lock Brake System (ABS) uses a Controller Anti-Lock Brake (CAB) module. CAB module monitors wheel speeds to modulate hydraulic pressure in each brake channel, when ABS or traction control are activated to prevent wheel lockup under severe braking conditions to provide improved vehicle control. CAB also provides proportioning valve function. CAB module communicates with other modules via the Programmable Communication Interface (PCI) bus circuit. For additional information on ABS, see appropriate ANTI-LOCK article in BRAKES.

AUDIO SYSTEM

All radio systems are equipped with 6 speakers. If one speaker circuit is shorted, the other speakers on that circuit will be shut down until short is repaired. A Diagnostic Trouble Code (DTC) will set. Scan tool will display which circuit is affected.

DATA LINK CONNECTOR

Data Link Connector (DLC) provides an input signal to Powertrain Control Module (PCM) via the Serial Communications Interface (SCI) transmit circuit when using scan tool to retrieve Diagnostic Trouble Codes (DTC) from PCM via the SCI receive circuit. DLC input signal is also used by PCM when performing various tests on electronic control system. DLC communicates with other modules via the Programmable Communication Interface (PCI) bus circuit.

ELECTRO-MECHANICAL INSTRUMENT CLUSTER MODULE

There are 4 different instrument clusters. Base, premium, luxury, and AutoStick. The premium cluster is equipped with a tachometer and a low fuel indicator. The luxury cluster has the same features as the premium cluster with an additional black overlay and chrome rings. The AutoStick cluster is the luxury cluster with the AutoStick function. The transmission controller (TCM) controls the Vacuum Fluorescent (VF) PRND or Auto-Stick display. The cluster will illuminate the appropriate PRND or gear position based on PCI Bus data received from the TCM.

The cluster speedometer, tachometer, and engine coolant temperature gauges are positioned using PCI Bus messages received from the PCM. The fuel gauge is a hard wired input from the fuel level sensor in the fuel pump module.

The cluster also contains warning indicators that are illuminated by hard wired inputs or by messages received from other modules on the PCI Bus.

The Trip/Total Odometer is a Vacuum Fluorescent (VF) display that is controlled by PCI Bus messages received from the PCM. The VF display also displays the Door, Cruise, and Trac messages. If the cluster experiences a loss of PCI Bus communication with other modules on the Bus, the cluster will display "nobuS" in the VF display.

The illumination lamps are hard wired in the cluster. When the park or headlamps are turned on, the cluster receives a hard wire input from the multi-function switch. The cluster sends a panel lamps dimmer signal to ground through the multi-function switch. The varying voltage drop is sensed by the instrument panel drivers to create a corresponding amount of illumination dimming. This dimming level is then sent out from the cluster to other components.

The cluster will communicate with the DRBIII to display PCI engine info, PCI Bus info, and certain inputs/outputs. The cluster is also capable of performing a diagnostic self-test that is actuated by depressing and holding the odometer trip reset stalk while cycling the ignition from the off to the on position. The cluster will position all of the gauges at specified calibration points and will illuminate all the PCI Bus controlled indicators. The cluster will also illuminate each segment of the VF display.

If the cluster does not detect voltage on the courtesy lamp circuit, the message FUSE will alternate with the odometer/trip odometer for 30 seconds after the ignition is turned on and for 15 seconds after the vehicle is first moved.

POWERTRAIN CONTROL MODULE

The Powertrain Control Module (PCM) is a digital computer that controls ignition timing, air/fuel ratio, fuel injector pulse width, ignition coil, spark advance, emission control devices, cooling fan, charging system, idle speed, cruise control (if equipped), tachometer (if equipped) and fuel pump. PCM sends and receives messages to other modules and the Data Link Connector (DLC) via the Programmable Communication Interface (PCI) bus circuit. For additional information on PCM, see THEORY & OPERATION - NEON & PT CRUISER article in ENGINE PERFORMANCE.

PROGRAMMABLE COMMUNICATION INTERFACE BUS CIRCUIT

The Programmable Communication Interface (PCI) bus circuit is a multiplexed network capable of supporting binary encoded messages shared between multiple modules and the Data Link Connector (DLC). The PCI bus circuit is connected by a single Violet/Yellow wire. Each PCI bus circuit component uses its local grounds as bus reference. If more than one module is trying to access the PCI bus circuit at one time, the code being sent determines which message has higher priority, and is then allowed to access bus circuit first. Communication over the bus circuit is essential to proper operation of vehicles on-board diagnostic systems and Diagnostic Readout Box (DRBIII) scan tool or generic scan tool. Problems with operation of bus circuit or scan tool must be corrected before proceeding with diagnostic testing.

REMOTE KEYLESS ENTRY MODULE

There are 2 remote keyless entry modules, premium and base. The base module is for a vehicle with power door locks only. The base module performs the same functions that the premium module does but has no provisions for Vehicle Theft Security System (VTSS) or remote keyless entry. Both modules communicate with other modules via the PCI bus circuit.

The module monitors the airbag control module messages for the purpose of monitoring the deployment of the airbag. Upon receiving that message, along with the verification that the ignition is on, it will provide the enhanced accident response feature. This feature will cause the module to unlock all doors and the instrument cluster to turn the courtesy lamps on.

The RKE module communicates with the powertrain control module to receive vehicle speed information to activate the rolling door lock feature, receive the "okay to lock" message and receive body style information.

The Base module wakes up the instrument cluster to turn on the illuminated entry when it senses a signal from the driver or passenger (BUX) cylinder lock switch. The premium module wakes up the instrument cluster to turn on the illuminated entry when it senses a signal from the RKE transmitter.

Two RKE transmitters are supplied with a premium equipped vehicle but a total of 4 can be programmed to the module. Horn chirp on a premium equipped vehicle is customer programmable.

SENTRY KEY IMMOBILIZER MODULE

Sentry Key Immobilizer Module (SKIM) prevents unauthorized vehicle operation. Sentry Key Immobilizer System (SKIS) consists of the SKIM and ignition keys equipped with a transponder chip (Sentry Keys). SKIM communicates with other modules via the Programmable Communication Interface (PCI) bus circuit.

SKIM sends messages to Electro-Mechanical Instrument Cluster (EMIC) module to control Vehicle Theft Security System (VTSS) indicator light. EMIC module performs VTSS indicator light check when ignition switch is turned to RUN or START position. EMIC turns indicator light on for about 3 seconds. If indicator light remains on, SKIM has determined a system malfunction exists or SKIS has become inoperative. If invalid key is inserted in ignition switch and turned to RUN position, SKIM will flash VTSS light. If invalid key is turned to START position, vehicle will start and run for 2 seconds, then shut off. For additional information on SKIS, see ANTI-THEFT SYSTEM article. Also see SELF-DIAGNOSTICS - NEON article in ENGINE PERFORMANCE.

SIDE AIR BAG CONTROL MODULE

On vehicles equipped with side air bags, Side Impact Air Bag Control Modules (SIACM) are located below front door opening, in front of "B" pillar. SIACM performs self-diagnostics and circuit tests to monitor system function. SIACM reports to ORC once every second. If any fault exists, SIACM will request ORC to turn air bag indicator light on. ORC will send a message via PCI bus circuit to Electro-Mechanical Instrument Panel (EMIC) to turn air bag indicator light on. For additional information on air bag system, see AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS.

VEHICLE THEFT SECURITY SYSTEM MODULE

Vehicle Theft Security System (VTSS) module is integrated into Remote Keyless Entry (RKE) module. Also see REMOTE KEYLESS ENTRY MODULE . VTSS module monitors vehicle doors, hood, trunk, deck lid (trunk) key cylinder and ignition for unauthorized operation/entry. When alarm is triggered, the horn will sound and interior and exterior lights will flash for 3 minutes. Exterior lights will continue to flash for 15 minutes. VTSS module will communicate with Sentry Key Immobilizer Module (SKIM), and other modules, via the Programmable Communication Interface (PCI) bus circuit to activate "engine kill" feature. The engine will not restart until VTSS is disarmed. For additional information on VTSS, see ANTI-THEFT SYSTEM article.

PROGRAMMING

Note. Programming procedures requiring use of a scan tool are written specifically for Diagnostic Readout Box (DRBIII) scan tool. Other scan tools may not be capable of performing all necessary functions.

Note. If Powertrain Control Module (PCM) is replaced, the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into the PCM to prevent Diagnostic Trouble Codes (DTC) from being set in Occupant Restraint Controller (ORC) and Anti-Lock Brake System (ABS) Controller Anti-Lock Brake (CAB) module.

Note. If PCM and Sentry Key Immobilizer Module (SKIM) are both replaced, all new keys must be used.

1. Obtain vehicles unique Personal Identification Number (PIN) assigned to SKIM from vehicle owner or manufacturer. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, enter correct VIN and mileage into PCM. Go to next step.
2. Using scan tool, clear DTCs from ABS CAB module and ORC. Using scan tool, select BODY, THEFT ALARM, then SKIM. Place SKIM in secured access mode by entering 4-digit PIN. Using scan tool, select UPDATE TRANSFER KEY DATA. Secret key data will transfer from SKIM to PCM. Go to next step.
3. Attempt to start vehicle. If vehicle starts and stays running and customers complaint cannot be duplicated, system is operating correctly and repair is complete. If vehicle does not start or stay running, repair by symptom. See «TROUBLE SHOOTING - NO CODES - CARS - EXCEPT SEBRING COUPE & STRATUS COUPE»(ref-142307) article in ENGINE PERFORMANCE.

Customer Procedure

Using this procedure will switch between enabled and disabled feature. Open drivers door, sit in vehicle and close door. Turn ignition on and off 4 times, ending with ignition off. Within 10 seconds, press drivers door lock button to UNLOCK position. A chime will signal completed procedure. Whether system is enabled or disabled is not indicated.

Using this procedure will switch between enabled and disabled feature. Open driver's door, sit in vehicle and close door. Turn ignition on and off 4 times, ending with ignition off. Within 10 seconds, press driver's door lock button to LOCK position. a chime will signal completed procedure. Whether system is enabled or disabled is not indicated.

1. Ensure ignition is off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on.
2. Using scan tool, select BODY, THEFT ALARM, VTSS, MISCELLANEOUS, then CONFIGURE MODULE. Follow scan tool prompts. When configuration (programming) is complete, turn ignition off and disconnect scan tool. Program Remote Keyless Entry (RKE) transmitters into RKE module memory. See «REMOTE KEYLESS ENTRY TRANSMITTER»(ref-151757-S26164238552003020300000).

HORN CHIRP

The horn chirp that signals that the doors have been locked can be toggled on or off by using the following procedure

1. Insert the ignition key and turn the switch to the on/run position.
2. Press and hold the unlock button on the transmitter for 4 to 10 seconds.
3. Continue to hold the unlock button and press the lock button.
4. Release both buttons. A chime will sound to signify that the feature has been successfully completed.

SENTRY KEYS

Note. Sentry Key Immobilizer Module (SKIM) will only remain in secured access mode for 60 seconds. If incorrect unique Personal Identification Number (PIN) is entered 3 times, SKIM will be locked for one hour. To unlock SKIM, turn ignition on and allow it to remain on for one hour. When SKIM is locked, scan tool will display BUS +/- SIGNALS OPEN.

Note. If 2 sentry keys are already programmed, use customer learn method. See CUSTOMER LEARN METHOD . If 2 sentry keys are not already programmed, use scan tool method. See SCAN TOOL METHOD .

Customer Learn Method

Note. The following steps must be completed in proper order. Sentry Key Immobilizer System (SKIS) will automatically exit CUSTOMER LEARN programming mode if time allotted is exceeded, or if 8 keys have already been programmed.

1. Obtain 2 programmed sentry keys from vehicle owner. Ensure new sentry key blank is cut before proceeding. Insert one of the 2 valid sentry keys into ignition switch. Turn ignition on.
2. After 3 seconds, but no more than 15 seconds, turn ignition off. Remove key. Insert second valid sentry key. Turn ignition on.
3. About 10 seconds after completion of previous step, Vehicle Theft Security System (VTSS) Light Emitting Diode (LED) indicator will flash and a single tone will be heard. This indicates system has entered customer learn programming mode.
4. Within 50 seconds, turn ignition off. Remove second valid sentry key. Insert blank sentry key. Turn ignition on. After about 10 seconds, a single tone will be heard. VTSS LED indicator will stop flashing and stay on for about 3 seconds to indicate sentry key has been successfully programmed.
5. SKIS will return to normal operation immediately following exit from customer learn programming mode. Repeat procedure for each additional sentry key to be programmed.

Note. SKIM will only remain in secured access mode for 60 seconds. If incorrect unique Personal Identification Number (PIN) is entered 3 times, SKIM will be locked for one hour. To unlock SKIM, turn ignition on for one hour. When SKIM is locked, scan tool will display BUS +/- SIGNALS OPEN.

1. Obtain vehicles unique Personal Identification Number (PIN) assigned to SKIM from vehicle owner or manufacturer. Turn ignition off. Remove all test equipment and jumper wires. Connect any disconnected components. Go to next step.
2. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, select BODY, then SKIM MODULE REPLACEMENT. Enter 4-digit PIN to put SKIM in access mode. Go to next step.
3. Using scan tool, select BODY, THEFT ALARM, SKIM, MISCELLANEOUS, then select desired procedure and follow steps displayed on scan tool. If SKIM has been replaced, ensure all keys and remote transmitters to be used with vehicle are programmed into SKIM. See «SENTRY KEYS»(ref-151757-S30310905942003020300000) and «REMOTE KEYLESS ENTRY TRANSMITTER»(ref-151757-S26164238552003020300000).

SYSTEM TESTS

Note. Ensure battery is fully charged before performing any test. For component locations, see COMPONENT LOCATIONS .

COMMUNICATIONS

Note. For communications system wiring diagram, see COMPUTER DATA LINES in SYSTEM WIRING DIAGRAMS article in ELECTRICAL..

Possible Causes

Communication problems with individual modules may be caused by power and ground circuit problems at affected module, internal problems in module or bus circuit problems.

Bus +/- Signals Open From Compass/Temperature Mirror

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition off. Turn all lights off. Disconnect the compass/temperature mirror harness connector. Using a 12-volt test light connected to 12-volts, probe each ground circuit. If the test light is illuminated for both circuits, go to the next step. If the test light is not illuminated for both circuits, repair the ground circuit for an open.
2. Turn the ignition off. Disconnect the compass/temperature mirror harness connector. Using a 12-volt test light connected to ground, probe the fused B+ circuit. If the test light illuminated, go to the next step. If the test light is not illuminated, repair the fused B+ circuit for an open.
3. Turn the ignition off. Disconnect the compass/temperature mirror harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the fused ignition switch output circuit. If the test light illuminated, go to the next step. If the test light did not illuminate, repair the fused ignition switch output circuit for an open.
4. Ensure there is PCI Bus communication with other modules on the vehicle before proceeding. If not, refer to the symptom list and repair as necessary. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table. Disconnect the compass/temperature mirror harness connector. Use Scope Input Cable (CH7058), Cable-To-Probe Adapter (CH7062), and the Red and Black test probes. Connect the scope input cable to the channel one connector on the DRB. Attach the Red and Black leads and the cable to probe adapter to the scope input cable. With the DRBIII, select PEP MODULE TOOLS, LAB SCOPE, LIVE DATA. Select 12-volt square wave. Press F2 for Scope. Press F2 and use the down arrow to set voltage range to 20 volts. Set Probe to x10. Press F2 again when complete. Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus circuit in the compass/temperature mirror connector. Turn the ignition on. Observe the voltage display on the DRB lab scope. If the voltage pulses from 0 to approximately 7.5 volts, replace the compass/temperature mirror in accordance with the service information. If the voltage does not pulse, repair the PCI bus circuit for an open.

Bus +/- Signal Open Or No Response From Instrument Cluster

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition off. Turn all lights off. Disconnect the instrument cluster harness connector. Using a 12-volt test light connected to12-volts, probe the ground circuit. If the test light is illuminated, go to the next step. If the test light does not illuminate, repair the ground circuit for an open.
2. Turn the ignition off. Disconnect the instrument cluster harness connector. (Scheme 8) Using a 12-volt test light connected to ground, probe the fused B+ circuit. If the test light is illuminated, go to the next step. If the test light is not illuminated, repair the fused B+ circuit for an open.
3. Turn the ignition off. Disconnect the instrument cluster harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the fused ignition switch output circuit. If the vehicle is equipped with the Autostick feature, it may be necessary to probe both fused ignition switch output circuits. If the test light is illuminated, go to the next step. If the test light is not illuminated, repair the fused ignition switch output circuit for an open.
4. Ensure there is PCI Bus communication with other modules on the vehicle before proceeding. If not, refer to the symptom identification table and repair as necessary. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table. Disconnect the instrument cluster harness connector. Use Scope Input Cable (CH7058), Cable-To-Probe Adapter (CH7062), and the Red and Black test probes. Connect the scope input cable to the channel one connector on the DRB. Attach the Red and Black leads and the cable to probe adapter to the scope input cable. With the DRBIII select PEP MODULE TOOLS. Select LAB SCOPE. Select LIVE DATA. Select 12-volt square wave. Press F2 for scope. Press F2 and use the down arrow to set voltage range to 20 volts. Set probe to x10. Press F2 again when complete. Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus circuit in the instrument cluster connector. Turn the ignition on. Observe the voltage display on the DRB lab scope. If the voltage pulses from 0 to approximately 7.5 volts, replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the voltage does not pulse, repair the PCI Bus circuit for an open.

Scheme 8

Bus +/- Signals Open Or No Response From RKE

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Turn off all lights. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Using ohmmeter, check resistance between RKE module connector terminal No. 12, ground circuit and ground. (Scheme 9) Check resistance between RKE module connector terminal No. 8, ground circuit and ground. If both resistance measurements are less than 10 ohms, go to next step. If any resistance measurement is 10 ohms or more, repair open ground circuit.
2. Using a voltmeter, check voltage on RKE module connector terminal No. 3, fused B+ circuit. Check voltage on RKE module connector terminal No. 9, fused B+ circuit. If both voltage measurements are 10 volts or more, go to next step. If any voltage measurement is less than 10 volts, replace open fuse No. 14 and/or No. 16 in fuse block or repair open fused B+ circuit.
3. Turn ignition on. Using a voltmeter, check voltage on RKE module connector terminal No. 22, fused ignition switch output start/run circuit. If voltage is 10 volts or more, go to next step. If voltage is less than 10 volts, replace open fuse No. 11 (10-amp) in fuse block or repair open wire.
4. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, attempt to communicate with other modules. If scan tool does not communicate with other modules, proceed to «COMPLETE PCI BUS FAILURE»(ref-151757-S24809223342003020300000) test. If scan tool communicates with other modules, go to next step.
5. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-To-Probe Adapter (CH7062) to scope input cable. Go to next step.
6. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Go to next step.
7. Connect Black lead to ground. Connect Red lead to RKE module connector terminal No. 19, PCI bus circuit. Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. If voltage remains at zero volts, repair open wire.

Scheme 9

Bus +/- Signal Open Or No Response From SKIM

Note. After making any repairs, perform SKIS VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, attempt to communicate with Electro-Mechanical Instrument Cluster (EMIC). If scan tool communicates with EMIC, go to next step. If scan tool does not communicate with EMIC, go to «BUS +/- SIGNAL OPEN OR NO RESPONSE FROM INSTRUMENT CLUSTER»(ref-151757-S05595724162003020300000).
2. Turn ignition off. Disconnect 6-pin SKIM connector. see scheme 5 Using an ohmmeter, check resistance between SKIM connector terminal No. 5, ground circuit and ground. (Scheme 10) If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
3. Turn ignition on. Using voltmeter, check voltage between SKIM connector terminal No. 4, fused ignition switch output run/start circuit and ground. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open wire.
4. Turn ignition off. Using a voltmeter, check voltage on SKIM connector terminal No. 6, fused B+ circuit. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open wire.
5. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-To-Probe Adapter (CH7062) to scope input cable. Go to next step.
6. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Go to next step.
7. Connect Black lead to SKIM connector terminal No. 5, ground circuit. Connect Red lead to SKIM connector terminal No. 2, PCI bus circuit. Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace SKIM. See «SENTRY KEY IMMOBILIZER MODULE»(ref-151757-S29415085852003020300000) under REMOVAL & INSTALLATION. If voltage remains at zero volts, repair open.

Scheme 10

No Response From ORC

Note. After making any repairs, perform AIR BAG VERIFICATION TEST under VERIFICATION TESTS unless instructed otherwise in following steps.

1. Turn ignition off. Disconnect negative battery cable and wait at least 2 minutes before proceeding. Disconnect ORC connector. see scheme 1 Check, clean and repair connectors as necessary. Turn ignition on, then reconnect negative battery cable. Using a voltmeter, check voltage on ORC connector terminals No. 14, fused ignition switch start/run circuit and No. 15, fused ignition switch run circuit. (Scheme 11) If voltage is more than 10 volts on both circuits, go to next step. If voltage is 10 volts or less on either circuit, repair open wire. Check and replace associated fuses as necessary. See «WIRING DIAGRAMS»(ref-151757-S11783265392003020300000).
2. Turn ignition off. Disconnect negative battery cable. Using ohmmeter, check resistance between ORC connector terminal No. 4, ground circuit and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
3. Ensure ignition is off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, attempt to communicate with other modules. If scan tool does not communicate with other modules, proceed to «COMPLETE PCI BUS FAILURE»(ref-151757-S24809223342003020300000) test. If scan tool communicates with other modules, go to next step.
4. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-To-Probe Adapter (CH7062) to scope input cable. Go to next step.
5. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Go to next step.
6. Connect Black lead to ground. Connect Red lead to ORC connector terminal No. 21, PCI bus circuit. Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace ORC. See «AIR BAG RESTRAINT SYSTEMS»(ref-150719) article in RESTRAINTS. If voltage remains at zero volts, repair open wire.

Scheme 11

No Response From CAB

Note. After making any repairs, perform ANTI-LOCK BRAKE SYSTEM VERIFICATION TEST under VERIFICATION TESTS.

Note. Anti-lock Brake System (ABS) Controller Anti-Lock Brake (CAB) module may also be referred to as CAB controller.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, attempt to communicate with ORC and EMIC. If scan tool communicates with both modules, go to next step. If scan tool does not communicate with both modules, proceed to «COMPLETE PCI BUS FAILURE»(ref-151757-S24809223342003020300000) test.
2. Turn ignition off. Disconnect 25-pin CAB module connector, located near left front strut tower. see scheme 6 Using ohmmeter, check resistance between ground and CAB module connector terminals No. 8 and 24, ground circuits. (Scheme 12) If resistance is less than one ohm in both circuits, go to next step. If resistance is one ohm or more on either circuit, repair open wires.
3. Using voltmeter, check voltage between CAB module connector terminal No. 4, fused ignition switch output start/run circuit and ground. If voltage is 10 volts or more, go to next step. If voltage is less than 10 volts, repair open wire.
4. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, attempt to communicate with other modules. If scan tool does not communicate with other modules, proceed to «COMPLETE PCI BUS FAILURE»(ref-151757-S24809223342003020300000) test. If scan tool communicates with other modules, go to next step.
5. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-To-Probe Adapter (CH7062) to scope input cable. Go to next step.
6. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Go to next step.
7. Connect black lead to ground. Connect Red lead to CAB harness connector terminal No. 10, PCI bus circuit. Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace CAB. See appropriate ANTI-LOCK article in BRAKES. If voltage remains at zero volts, repair open wire.

Scheme 12

No Response From Left SIACM

Note. After making any repairs, perform AIR BAG VERIFICATION TEST under VERIFICATION TESTS unless instructed otherwise in following steps.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, select PASSIVE RESTRAINTS and AIR BAG. If LOSS OF IGNITION RUN/START is not set, go to next step. If LOSS OF IGNITION RUN/START is set, go to «AIR BAG RESTRAINT SYSTEMS»(ref-150719) article in RESTRAINTS.
2. Turn ignition off. Disconnect negative battery cable and wait at least 2 minutes before proceeding. Disconnect 8-pin left SIACM connector, located near left B pillar. see scheme 3 Using ohmmeter, check resistance between left SIACM connector terminal No. 5, ground circuit and ground. If resistance is less than one ohm, go to next step. If resistance is one ohm or more, repair open wire.
3. Turn ignition on. Reconnect battery cable. Using voltmeter, check voltage between left SIACM connector terminal No. 1, fused ignition switch output start/run circuit and ground. If voltage is 10 volts or more, go to next step. If voltage is less than 10 volts, repair open wire.
4. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, attempt to communicate with other modules. If scan tool does not communicate with other modules, proceed to «COMPLETE PCI BUS FAILURE»(ref-151757-S24809223342003020300000) test. If scan tool communicates with other modules, go to next step.
5. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-To-Probe Adapter (CH7062) to scope input cable. Go to next step.
6. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Go to next step.
7. Connect Black lead to ground. Connect Red lead to left SIACM module connector terminal No. 10, PCI bus circuit. Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace left SIACM. See «AIR BAG RESTRAINT SYSTEMS»(ref-150719) article in RESTRAINTS. If voltage remains at zero volts, repair open wire.

No Response From PCM (PCI Bus)

Note. After making any repairs, perform POWERTRAIN VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, attempt to communicate with other modules. If scan tool does not communicate with other modules, proceed to «COMPLETE PCI BUS FAILURE»(ref-151757-S24809223342003020300000) test. If scan tool communicates with other modules, go to next step.
2. Using scan tool, read PCM DTCs. If scan tool reads DTCs, go to next step. If vehicle starts and scan tool cannot read DTCs, perform «NO RESPONSE FROM PCM (SCI ONLY)»(ref-151757-S23434360122003020300000) test. If vehicle does not start and scan tool cannot read DTCs, perform NS-4: NO RESPONSE FROM PCM test in «SELF-DIAGNOSTICS - NEON»(ref-133003) article in ENGINE PERFORMANCE.
3. Turn ignition off. Disconnect PCM connectors. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-To-Probe Adapter (CH7062) to scope input cable. Go to next step.
4. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Go to next step.
5. Connect Black lead to PCM C2 connector terminal No. 47, ground circuit. (Scheme 13) Connect Red lead to PCM C2 connector terminal No. 59, PCI bus circuit. Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace PCM. See «POWERTRAIN CONTROL MODULE»(ref-151757-S05932926212003020300000) under REMOVAL & INSTALLATION. If voltage remains at zero volts, repair open wire to PCM.

Scheme 13

No Response From PCM (SCI Only)

Note. After making any repairs, perform POWERTRAIN VERIFICATION TEST under VERIFICATION TESTS.

1. Perform cheking PCM power and ground circuits. See «CHECKING PCM POWER & GROUND CIRCUITS»(ref-151757-S08143074472003020300000) . If the vehicle passed this test, go to the next step, If the vehicle did not pass this test repair power or ground circuit as necessary.
2. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the DRBIII from the DLC. Measure the resistance between ground and the SCI transmit circuit. If the resistance is less than 5.0 ohms, go to the next step. If the resistance is not more than 5.0 ohms, go to step 4 .
3. Turn the ignition off. Disconnect the TCM harness connector (if equipped). Measure the resistance between ground and the SCI Transmit circuit. If the resistance is less than 5.0 ohms, repair the SCI transmit circuit for a short to ground. If the resistance is more than 5.0 ohms, replace the transmission control module.
4. Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the PCM harness connector. Disconnect the TCM harness connector (if equipped). Turn the ignition on. Measure the voltage of the SCI transmit circuit at the DLC connector (Terminal No. 7). If the voltage is more than 1.0 volt, repair the SCI transmit circuit for a short to voltage. If the voltage is less than 1.0 volt, go to the next step.
5. Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the PCM harness connector. Turn the ignition on. Measure the voltage of the SCI receive circuit at the DLC connector (Terminal No. 6). If the voltage is more than 1.0 volt, repair the SCI receive circuit for a short to voltage. If the voltage is less than 1.0 volt, go to the next step.
6. Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the PCM harness connector. Measure the resistance between the SCI transmit circuit and the SCI receive circuit at the PCM connector. If the resistance is less than 5.0 ohms, repair the short between the SCI transmit and the SCI recieve circuits. If the resistance is more than 5.0 ohms, go to the next step.
7. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the DRBIII from the DLC. Measure the resistance between ground and the SCI receive circuit. If the resistance is less than 5.0 ohms, repair the SCI recieve circuit for a short to ground. If the resistance is more than 5.0 ohms, go to the next step.
8. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the DRBIII from the DLC. Measure the resistance of the SCI receive circuit between the PCM connector and the DLC. If the resistance is less than 5.0 ohms, go to the next step. If the resistance is more than 5.0 ohms, repair the SCI recieve circuit for an open.
9. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the DRBIII from the DLC. Measure the resistance of the SCI transmit circuit between the PCM connector and the DLC. If the resistance is less than 5.0 ohms, go to the next step. If the resistance is more than 5.0 ohms, repair the SCI transmit circuit for an open.
10. If there are no possible causes remaining, replace and program the powertrain control module. See «POWERTRAIN CONTROL MODULE»(ref-151757-S05932926212003020300000) under REMOVAL & INSTALLATION.

Checking PCM Power & Ground Circuits

Note. After making any repairs, perform POWERTRAIN VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Disconnect 40-pin Powertrain Control Module (PCM) C1 and C2 connectors. Using a 12-volt test light connected to ground, probe PCM harness connector C2 terminal No. 42, fused B+ circuit. If test light illuminates, go to next step. If test light does not illuminate, repair fused B+ circuit. See «POWER DISTRIBUTION»(ref-141298-S36882864892003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
2. Turn ignition on. Using a 12-volt test light connected to ground, probe PCM harness connector C1 terminal No. 20, fused ignition start/run circuit. If test light illuminates, go to next step. If test light does not illuminate, repair fused ignition start/run circuit. See «POWER DISTRIBUTION»(ref-141298-S36882864892003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
3. Turn ignition off. Using a 12-volt test light connected to battery voltage, probe ground circuits at PCM harness connector C1 terminal No. 47 and PCM harness connector C2 terminals No. 10 and 50. If test light illuminates, test is complete. If test light does not illuminate, repair ground circuits. See «GROUND DISTRIBUTION»(ref-141298-S29574540202003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

No Response From Radio

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, attempt to communicate with other modules. If scan tool does not communicate with other modules, proceed to «COMPLETE PCI BUS FAILURE»(ref-151757-S24809223342003020300000) test. If scan tool communicates with other modules, go to next step.
2. Turn ignition off. Disconnect 7-pin radio connector C2. Turn ignition on. Using voltmeter, check voltage between radio connector C1 terminal No. 6, fused ignition switch output start/run circuit and ground. If voltage is 10 volts or more, go to next step. If voltage is less than 10 volts, repair open on fused ignition switch output start/run circuit. See «POWER DISTRIBUTION»(ref-141298-S36882864892003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
3. Turn ignition off. Using voltmeter, check voltage between radio connector C1 terminal No. 7, fused B+ circuit and ground. If voltage is 10 volts or more, go to next step. If voltage is less than 10 volts, repair open on fused B+ circuit. See «POWER DISTRIBUTION»(ref-141298-S36882864892003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
4. Disconnect radio C1 harness connector. Using ohmmeter, check resistance between radio ground wire and ground. If resistance is less than one ohm, go to next step. If resistance is one ohm or more, repair open radio ground wire.
5. Turn ignition on. Using scan tool, attempt to communicate with other modules. If scan tool does not communicate with other modules, proceed to «COMPLETE PCI BUS FAILURE»(ref-151757-S24809223342003020300000) test. If scan tool communicates with other modules, go to next step.
6. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-To-Probe Adapter (CH7062) to scope input cable. Go to next step.
7. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Go to next step.
8. Connect Black lead to ground. Connect Red lead to radio connector PCI bus circuit in the radio connector. Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace radio. If voltage remains at zero volts, repair open wire.

No Response From Right SIACM

Note. After making any repairs, perform AIR BAG VERIFICATION TEST under VERIFICATION TESTS unless instructed otherwise in following steps.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, select PASSIVE RESTRAINTS and AIR BAG. If LOSS OF IGNITION RUN/START is not set, go to next step. If LOSS OF IGNITION RUN/START is set, see «AIR BAG RESTRAINT SYSTEMS»(ref-150719) article in RESTRAINTS.
2. Turn ignition off. Disconnect negative battery cable and wait at least 2 minutes before proceeding. Disconnect 8-pin right SIACM connector, located near right B pillar. see scheme 3 Using ohmmeter, check resistance between right SIACM connector terminal No. 5, ground circuit and ground. If resistance is less than one ohm, go to next step. If resistance is one ohm or more, repair open wire.
3. Turn ignition on. Reconnect battery cable. Using voltmeter, check voltage between right SIACM connector terminal No. 1, fused ignition switch output start/run circuit and ground. If voltage is 10 volts or more, go to next step. If voltage is less than 10 volts, repair open wire.
4. Using scan tool, attempt to communicate with other modules. If scan tool does not communicate with other modules, proceed to «COMPLETE PCI BUS FAILURE»(ref-151757-S24809223342003020300000) test. If scan tool communicates with other modules, go to next step.
5. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-To-Probe Adapter (CH7062) to scope input cable. Go to next step.
6. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Go to next step.
7. Connect Black lead to ground. Connect Red lead to right SIACM harness connector terminal No. 10, PCI bus circuit. Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace right SIACM. See «AIR BAG RESTRAINT SYSTEMS»(ref-150719) article in RESTRAINTS. If voltage remains at zero volts, repair open wire.

Complete PCI Bus Failure

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, attempt to communicate with all modules. If scan tool communicates with one or more modules, go to next step. If scan tool does not communicate with any modules, go to step 3.
2. Turn ignition off. If all modules communicate, test is complete. If one or more modules will not communicate, check PCI bus circuit wiring between DLC and affected module. See «COMPUTER DATA LINES»(ref-141298-S27382595332003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Repair wiring as necessary. If no problem is found and modules still do not communicate, diagnose using appropriate test. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table under SELF-DIAGNOSTICS.
3. Remove scan tool. Disconnect 40-pin Powertrain Control Module (PCM) connector C2. Using an ohmmeter, check resistance of PCI bus circuit between DLC terminal No. 2 and PCM connector C2 terminal No. 59. (Scheme 13)and (Scheme 14). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
4. Reconnect PCM connector C2. Turn ignition on. Measure voltage at DLC connector terminal No. 2. If voltage is more than 1.5 volts, go to next step. If voltage is less than 1.5 volts, go to step 6.
5. Turn ignition off. Using a voltmeter connected to DLC terminal No. 2, PCI bus circuit and ground, monitor voltage as each of the following modules are disconnected one at a time. Occupant Restraint Controller Sentry Key Immobilizer Remote Keyless Entry Mechanical Instrument Cluster Anti-Lock Brake System (ABS) Controller Anti-Lock Brake (CAB) Powertrain Control If 1.5 volts or more exists after disconnecting all modules, repair short to voltage in wire. If voltage is less than 1.5 volts after disconnecting modules, replace suspect modules.
6. Turn ignition off. Wait one minute. Using an ohmmeter connected to DLC terminal No. 2, PCI bus circuit and ground, monitor resistance as each of the following modules are disconnected one at a time. Occupant Restraint Controller Sentry Key Immobilizer Remote Keyless Entry Mechanical Instrument Cluster Anti-Lock Brake System (ABS) Controller Anti-Lock Brake (CAB) Powertrain Control If resistance is less than 5 ohms after disconnecting all modules, repair short to ground in wire. If resistance is 5 ohms or more after disconnecting modules, replace suspect modules.

Scheme 14

High Beam Headlights Will Not Turn On

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Remove circuit breaker No. 2 (25-amp) from fuse block. Check voltage at circuit breaker input terminal No. 43 in fuse block. If battery voltage exists, go to next step. If battery voltage does not exist, repair power supply circuit. See «POWER DISTRIBUTION»(ref-141298-S36882864892003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
2. Check circuit breaker No. 2 from fuse block. If circuit breaker is blown, go to next step. If circuit breaker is okay, go to step 5.
3. Disconnect Gray 20-pin multifunction switch connector located on steering column. Check resistance between multifunction switch harness connector terminal No. 16, low beam output circuit and ground. (Scheme 15) If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, repair short to ground on wire.
4. Check resistance between multifunction switch harness connector terminal No. 17, high beam output circuit and ground. If resistance is more than 5 ohms, replace circuit breaker and recheck system. If resistance is 5 ohms or less, repair short to ground on wire.
5. Install circuit breaker. Disconnect Gray 20-pin multifunction switch connector located on steering column. Check voltage at multifunction switch connector terminal No. 19. If battery voltage exists, go to next step. If battery voltage does not exist, repair open on wire between fuse block and multifunction switch.
6. Using jumper wire, connect multifunction switch harness connector terminals No. 17 and No. 19. If headlights illuminate, replace multifunction switch. If headlights do not illuminate, repair wire between multifunction switch and headlights.

Scheme 15

High Beam Headlights Will Not Turn Off

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Remove circuit breaker 2 from the fuse block. If the high beam headlamps turn off, go to the next step. If the high beam headlamps do not turn off, repair the dimmer switch high beam output circuit for a short to voltage condition.
2. Disconnect the instrument cluster connector. Disconnect the multifunction switch connector. Measure resistance of the dimmer switch high beam output circuit to ground. If the resistance is less than 5.0 ohms, replace the instrument cluster. If the resistance is more than 5.0 ohms, replace the multifunction switch.

Low Beam Headlights Will Not Turn Off

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the headlamp switch to the off position. With the DRBIII, read the headlamp switch voltage. If the DRBIII displays headlamp switch voltage between 4.3 and 4.8 volts, go to next step. If the DRBIII does not display headlamp switch voltage between 4.3 and 4.8 volts, replace the multifunction switch.
2. Turn the ignition off. Disconnect the instrument cluster. Turn the ignition on. Measure voltage of the dimmer switch low beam output circuit. If the voltage is less than 1.0 volt, go to next step. If the voltage is more than 1.0 volt, repair the dimmer switch low beam output circuit for a short to voltage condition.
3. Turn the ignition off. Remove circuit breaker 2 from the junction block. Disconnect the instrument cluster harness connector. Measure resistance of the dimmer switch low beam output circuit and ground. If the resistance is less than 100.0 ohms, replace the fuse block. If the resistance is more than 100.0 ohms, replace the instrument cluster.

Low Beam Headlights Will Not Turn On

Disconnect Gray 20-pin multifunction switch connector located on steering column. If high beam headlights turn off, replace internally shorted multifunction switch. If high beam headlights stay on, repair short to voltage on wire between multifunction switch and headlights. See HEADLIGHTS in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

INSTRUMENT CLUSTER

Note. Ensure battery is fully charged before performing any test. For component locations, see COMPONENT LOCATIONS .

Note. For instrument panel wiring diagram, see INSTRUMENT CLUSTER in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

ABS Indicator Circuit Open

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

With the DRBIII, erase DTCs. Cycle the ignition and wait approximately 1 minute. If the ABS or Airbag indicator DTC reset, replace the instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the ABS or airbag indicator DTC did not reset, the test is complete.

ABS Message Not Received

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. With the DRBIII, attempt to communicate with the ABS, ACM, EATX, SBEC, or SKIM module. If the DRBIII was able to I/D or communicate with the module in question go to the next step. If the DRBIII was not able to I/D or communicate with the module in question, diagnose and repair communication problem. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table in SELF-DIAGNOSTIC SYSTEM.
2. With the DRBIII, erase DTCs. Cycle the ignition and wait approximately 1 minute. With the DRBIII, read DTCs. If the DTC reset, replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the DTC did not reset, the condition is not present at this time. Monitor DRBIII parameters while wiggling the related wire harness. Refer to any technical service bulletins that may apply. Visually inspect the related wiring harness and connector terminals.

Battery Loss

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition off. Remove and inspect the No. 13 fuse in the PDC. If the fuse is open, replace with the proper rated fuse. Turn the ignition on for approximately 1 minute. Turn the ignition off. Remove and inspect the #13 fuse in the PDC. If the #13 fuse in the PDC is open, repair the PDC #13 fused B+ circuit for a short to ground. If the #13 in the PDC is not open, go to the next step.
2. Turn the ignition off. Remove and inspect the fuse block #4 fuse. If the fuse is open, replace with the proper rated fuse. Turn the ignition on for approximately 1 minute. Turn the ignition off. Remove and inspect the fuse block #4 fuse. If the fuse block #4 fuse is open, repair the fuse block fused B+ circuit for a short to ground. If the fuse block #4 fuse is not open, go to next step.
3. Turn the ignition off. Measure the voltage between the PDC #13 fuse and ground. If the voltage is more than 10.5 volts go to the next step. If the voltage is less than 10.5 volts, repair the B+ circuit to the PDC #13 fuse for an open.
4. Turn the ignition off. Measure the voltage between the fuse block #4 fuse and ground. If the voltage is more than 10.5 volts, go to next step. If the voltage is less than 10.5 volts repair the B+ circuit to the fuse block #4 fuse for an open.
5. Turn the ignition off. Disconnect the instrument cluster harness connector. Check connectors and clean/repair as necessary. Measure the voltage between the fused B+ circuit and ground. If the voltage is more than 10.5 volts replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the voltage is less than 10.5 volts, repair the fused B+ circuit for an open between the fuse block #4 fuse and the instrument cluster.

Cluster Bus TX Shutdown

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

With the DRBIII, erase DTCs. Cycle the ignition and wait approximately 1 minute. With the DRBIII, read DTCs. If the DTC reset, replace the instrument cluster. If the DTC did not reset, the test is complete.

EATX Mismatch

1. With the DRBIII, read DTCs. If the DRBIII displays EATX BUS MESSAGE NOT RECEIVED refer to the appropriate test in communications. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table in SELF-DIAGNOSTIC SYSTEM. If the DRBIII does not display EATX BUS MESSAGE NOT RECEIVED, go to the next step.
2. With the DRBIII in Cluster Type, ensure that the instrument cluster is correctly configured. If the instrument cluster is configured correctly replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the instrument cluster is not configured correctly, use the DRBIII to configure the instrument cluster.

Fuel Level Sensor Open

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

Customer complaint will be gauge shows empty at all times. Instrument cluster monitors fuel level sensor resistance. Diagnostic Trouble Code (DTC) is set when resistance is more than 1100 ohms for 18 seconds.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, clear DTCs. Turn ignition off, then on. After 30 seconds, recheck DTCs. If FUEL LEVEL SENSOR OPEN is displayed, go to next step. If FUEL LEVEL SENSOR OPEN is not displayed, DTC is intermittent. Road test vehicle and recheck. Check for Technical Service Bulletins (TSBs). Check wiring and connectors.
2. Disconnect fuel pump module connector. Fuel pump module connector is located on fuel tank. Check connectors and repair as necessary. Check voltage between fuel pump harness connector terminal No. 3 and ground. (Scheme 16) If voltage does not exist, go to next step. If voltage exists, repair short to voltage on wire between fuel pump module and instrument cluster.
3. Using a jumper wire, connect fuel pump harness connector terminal No. 3 to ground. Turn ignition on. Using scan tool, select SENSORS and check fuel sender volts. If scan tool displays zero volts, go to next step. If scan tool does not display zero volts, repair open on wire between fuel pump module and instrument cluster.
4. Using ohmmeter, check resistance between fuel pump module connector terminal No. 2, ground circuit and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
5. Using ohmmeter, check resistance between fuel pump module (component side) terminals No. 2, fuel level sensor ground circuit and No. 3, fuel level sensor signal circuit. If resistance is more than 1500 ohms, replace fuel level sensor. Fuel level sensor is mounted on fuel pump module. See «FUEL PUMP MODULE»(ref-142492-S09979590032002080600000) under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - CARS article in ENGINE PERFORMANCE. If resistance is 1500 ohms or less, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.

Scheme 16

Fuel Level Sensor Short

Note. After making any repairs, perform POWERTRAIN VERIFICATION TEST under VERIFICATION TESTS.

Customer complaint will be gauge shows empty at all times. Instrument cluster monitors fuel level sensor resistance. Diagnostic Trouble Code (DTC) is set when resistance is less than 25 ohms.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, clear DTCs. Turn ignition off, then on. After 30 seconds, recheck DTCs. If FUEL LEVEL SENSOR OPEN is displayed, go to next step. If FUEL LEVEL SENSOR OPEN is not displayed, DTC is intermittent. Road test vehicle and recheck. Check for Technical Service Bulletins (TSBs). Check wiring and connectors.
2. Disconnect fuel pump module connector. Fuel pump module connector is located on fuel tank. Check connectors and repair as necessary. Using ohmmeter, check resistance between fuel pump module (component side) terminals No. 2, fuel level sensor ground circuit and No. 3, fuel level sensor signal circuit. (Scheme 16) If resistance is 50 ohms or more, go to next step. If resistance is less than 50 ohms, replace fuel level sensor. Fuel level sensor is mounted on fuel pump module. See «FUEL PUMP MODULE»(ref-142492-S09979590032002080600000) under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - CARS article in ENGINE PERFORMANCE.
3. Turn ignition off. Disconnect instrument cluster connector. Instrument cluster connector is a 26-pin connector, located behind left upper instrument panel. Using an ohmmeter, check resistance between instrument cluster connector terminal No. 7, fuel level sensor signal circuit and ground. (Scheme 8) If resistance is less than 10,000 ohms, repair short to ground on Dark Blue wire. If resistance is 10,000 ohms or more the test is complete.

Panel Dimmer Open

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, clear Diagnostic Trouble Codes (DTC). Turn parking lights on. After 10 seconds, rotate dimmer switch through full range. Recheck DTCs. If PANEL DIMMER OPEN is displayed, go to next step. If PANEL DIMMER OPEN is not displayed, DTC is intermittent. Monitor scan tool while wiggling wiring. Check for Technical Service Bulletins (TSBs). Check wiring and connectors.
2. Turn ignition off. Turn parking lights off. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Check voltage between instrument cluster connector terminal No. 6, panel lights dimmer signal circuit and ground. (Scheme 8) If voltage does not exist, go to next step. If voltage exists, repair short to voltage on wire.
3. Disconnect 20-pin multifunction switch connector, located under upper steering column shroud. Using ohmmeter, check resistance of panel lights dimmer signal circuit between instrument cluster connector terminal No. 6 and multifunction switch connector terminal No. 8. (Scheme 8)and (Scheme 15). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
4. Using ohmmeter, check resistance of panel lights dimmer ground circuit between multifunction switch connector terminal No. 7 and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
5. Reconnect multifunction switch connector. Using an ohmmeter, check resistance between instrument cluster connector terminal No. 6, panel lights dimmer signal circuit and ground. Observe ohmmeter display while rotating dimmer switch from low to high. If resistance increases smoothly from zero ohms to about 3500 ohms, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If resistance does not increase as specified, replace multifunction switch. See «MULTIFUNCTION SWITCH»(ref-25125-S16903663192001010500000) under REMOVAL & INSTALLATION in STEERING COLUMN SWITCHES article.

All Gauges Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, select SYSTEM MONITORS and J1850 MODULE SCAN. If scan tool displays MIC PRESENT ON BUS, go to next step. If scan tool does not display MIC PRESENT ON BUS, repair as necessary. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table under SELF-DIAGNOSTIC SYSTEM.
2. Using scan tool, select BODY, MIC, SYSTEM TESTS and PCM MONITOR. If scan tool does not display PCM INACTIVE ON BUS, go to next step. If scan tool displays PCM INACTIVE ON BUS, go to «NO RESPONSE FROM PCM (PCI BUS)»(ref-151757-S15487136522003020300000) under COMMUNICATIONS.
3. Using scan tool, select BODY, MIC and MODULE DISPLAY. If scan tool does not display NO RESPONSE FROM MIC, go to next step. If scan tool displays NO RESPONSE FROM MIC, go to «BUS +/- SIGNAL OPEN OR NO RESPONSE FROM INSTRUMENT CLUSTER»(ref-151757-S05595724162003020300000) under COMMUNICATIONS.
4. Turn ignition off. Remove and inspect fuse No. 11 from fuse block. If fuse is open, replace fuse, then turn ignition on for one minute. Turn ignition off. If fuse is okay, go to next step. If fuse is open, repair short to ground on wire.
5. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Turn ignition on. Using a voltmeter, check voltage on instrument cluster connector terminal No. 15, fused ignition switch output start/run circuit. (Scheme 8) If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open wire.
6. Turn ignition off. Using ohmmeter, check resistance between instrument cluster harness connector terminal No. 10, ground circuit and ground. If resistance is 5 ohms or more, repair open wire. If resistance is less than 5 ohms, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.

Any PCI Bus Indicator Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

Test is for all indicators with exception of turn signal, high beam and foglight indicators (bulbs). Ensure instrument cluster communicates on PCI bus. Diagnose and repair any Diagnostic Trouble Codes (DTC) before continuing. Turn ignition off. Remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. Remove suspect Light Emitting Diode (LED) from instrument cluster. Using a DVOM, select DIODE mode. Connect DVOM black lead to LED negative (-) terminal. Connect DVOM Red lead to LED positive (+) terminal. If LED illuminates, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If LED does not illuminate, replace defective LED.

Brake Warning Indicator Always On

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition on. Ensure that the parking brake is disengaged. With the DRBIII in inputs/outputs, read the parking brake switch state. If the DRBIII displays CLOSED with the parking brake disengaged, go to the next step. If the DRBIII does not display CLOSED with the parking brake disengaged, go to step 4 .
2. Turn the ignition off. Disconnect the park brake switch harness connector. Turn the ignition on. With the DRBIII in Inputs/Outputs, read the parking brake switch state. If the DRBIII displays OPEN, replace the park brake switch. If the DRBIII does not display OPEN, go to the next step.
3. Turn the ignition off. Disconnect the park brake switch harness connector. Disconnect the instrument cluster harness connector. Measure the resistance between ground and the brake warning indicator driver circuit. If the resistance is less than 10,000 ohms (should be infinite) repair the brake warning indicator circuit for a short to ground between the park brake switch and the instrument cluster. If the resistance is more than 10,000 ohms (should be infinite) replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.
4. Ensure that the brake fluid is properly filled to the correct level, and the base brake system operates properly. Turn the ignition on. With the DRBIII in Inputs/Outputs, read the brake fluid level switch state. Disconnect the brake fluid level switch harness connector. With the DRBIII in Inputs/Outputs, read the brake fluid level switch state. If the DRBIII brake fluid level switch input changed states, replace the brake fluid level switch. If the DRBIII brake fluid level switch input did not change states, go to the next step.
5. Turn the ignition off. Disconnect the brake fluid level switch harness connector. Disconnect the PCM (C2 connector) harness connector. Measure the resistance between ground and the Red brake warning indicator driver circuit. If the resistance is less than 10,000 ohms (should be infinite) repair the Red brake warning indicator driver circuit for a short to ground between the brake fluid level switch and the instrument cluster. If the resistance is more than 10,000 ohms (should be infinite), the test is complete.

Brake Warning Indicator Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Observe the brake warning indicator during the bulb check or instrument cluster self test. If the indicator illuminated, go to the next step. If the indicator did not illuminate, go to step 8 .
2. If the brake warning indicator is inoperative with the use of the park brake, go to next step. If the brake warning indicator is operative with the use of the park brake, go to step 5 .
3. Turn the ignition off. Disconnect the park brake switch harness connector. Connect a jumper wire between the brake warning indicator circuit and ground. Turn the ignition on and observe the brake warning indicator. If the indicator illuminated, replace the park brake switch. If the indicator did not illuminate, go to next step.
4. Turn the ignition off. Disconnect the instrument cluster harness connector. Disconnect the park brake switch harness connector. Measure the resistance of the brake warning indicator circuit. If the resistance is less than 5.0 ohms replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the resistance is more than 5.0 ohms, repair the brake warning indicator circuit for an open.
5. Turn the ignition on. With the DRBIII in Inputs/Outputs, read the brake fluid level switch state. Disconnect the brake fluid level switch harness connector. Connect a jumper wire between cavity A and cavity B of the brake fluid level switch harness connector. With the DRBIII, observe the brake fluid level input. If the brake fluid level input changed state, replace the brake fluid level switch. If the brake fluid level input did not change state, go to the next step.
6. Turn the ignition off. Disconnect the brake fluid level switch harness connector. Measure the resistance of the brake fluid level switch ground circuit. If the resistance is more than 5.0 ohms repair the brake fluid level switch ground circuit for an open. If the resistance is less than 5.0 ohms, go to the next step.
7. Turn the ignition off. Disconnect the PCM (C2 connector) harness connector. Disconnect the brake fluid level switch harness connector. Measure the resistance of the Red brake warning indicator driver circuit. If the resistance is more than 5.0 ohms repair the Red brake warning indicator driver circuit for an open. If the resistance is less than 5.0 ohms, replace the powertrain control module. See «POWERTRAIN CONTROL MODULE»(ref-151757-S05932926212003020300000) under REMOVAL & INSTALLATION.
8. Turn the ignition off. Remove the instrument cluster. Remove the inoperative indicator LED. Using a DVOM, select DIODE MODE, and attach the leads across the LED. Ensure that the Red lead is on the + of the LED. If the LED illuminated, replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the LED did not illuminate, replace the brake warning indicator LED. See «INSTRUMENT CLUSTER BULBS & LEDS»(ref-154922-S19816540572003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.

Foglight Indicator Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn foglights on. If foglights are inoperative, repair as necessary. If foglights operate, turn ignition off. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Turn headlights and foglights on. Using a voltmeter, check voltage between instrument cluster connector terminal No. 4, foglight switch output circuit and ground. (Scheme 8) If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open on wire.
2. Turn ignition off. Remove instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. Remove foglight Light Emitting Diode (LED) from instrument cluster. Using a DVOM, select DIODE mode. Connect DVOM Black lead to LED negative (-) terminal. Connect DVOM red lead to LED positive (+) terminal. If LED illuminates, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If LED does not illuminate, replace defective LED.

Fuel Gauge Inaccurate

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition on. With the DRBIII, read DTCs. If the DRBIII displays FUEL LEVEL SENSOR OPEN or FUEL LEVEL SENSOR SHORT, see «FUEL LEVEL SENSOR OPEN»(ref-151757-S39523500282003020300000) or «FUEL LEVEL SENSOR SHORT»(ref-151757-S10144038602003020300000) for related symptoms. If the DRBIII does not display FUEL LEVEL SENSOR OPEN or FUEL LEVEL SENSOR SHORT, go to next step.
2. Perform the instrument cluster self test. Turn the ignition off. Press and hold the trip reset button. Turn the ignition on. Observe the fuel gauge during the self test. The fuel gauge pointer should pause at each of these following positions: E 1/2 Full If the fuel gauge performed the self test properly, go to next step. If the fuel gauge did not perform the self test properly, replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.
3. Turn the ignition off. Remove the fuel pump module from the fuel tank. For fuel pump module removal, see «REMOVAL, OVERHAUL & INSTALLATION - NEON»(ref-142492) article in ENGINE PERFORMANCE. Inspect for physical obstructions in the fuel tank. Inspect the fuel level sensor for bent or damaged parts. Measure the resistance of the fuel level sensor while moving the float arm through the complete range of motion. The fuel level sensor should measure the following resistances: E = 184- 04 ohms 1/4 = 360-410 ohms 1/2 = 565-585 ohms 3/4 = 741-791 ohms Full = 947-967 ohms

The fuel level sensor should read resistance through the full range of float arm motion. If the fuel level sensor reads the proper resistance values through the full range of motion, the condition is not present at this time. Monitor DRBIII parameters while wiggling the related wire harness. Refer to any technical service bulletins that may apply. Visually inspect the related wiring harness and connector terminals. If the fuel level sensor did not read the proper resistance values through the full range of motion, replace the fuel level sensor.

High Beam Indicator Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Ensure high beam headlights operate. Turn ignition off. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Turn on headlights and select high beams. Using test light connected to ground, probe instrument cluster harness connector terminal No. 26. (Scheme 8) If test light illuminates, go to next step. If test light does not illuminate, repair open wire.
2. Remove and inspect high beam indicator bulb. If bulb is faulty, replace bulb. If bulb is okay, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.

Cluster Illumination Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Using scan tool, read ELECTRO/MECH CLUSTER Diagnostic Trouble Codes (DTC). If scan tool does not display PANEL DIMMER OPEN, go to next step. If scan tool displays PANEL DIMMER OPEN, perform «PANEL DIMMER OPEN»(ref-151757-S19844363192003020300000) test.
2. Turn ignition off. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Turn park lights on. Using test light connected to ground, probe instrument cluster harness connector terminal No. 14. (Scheme 8) If test light illuminates, go to next step. If test light does not illuminate, repair open wire.
3. Remove instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. Remove and check instrument cluster bulbs. Replace bulbs as necessary. If bulbs are okay, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.

Low Oil Pressure Indicator Always On

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Ensure that engine oil pressure is within normal operating range. Allow the engine to idle. With the DRBIII in SENSORS, read the engine oil pressure switch state. If the engine oil pressure switch status reads CLOSED, go to the next step. If the engine oil pressure switch status does not read CLOSED, replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.
2. Turn the ignition off. Disconnect the engine oil pressure switch harness connector. With the DRBIII in SENSORS, read the engine oil pressure switch status. If the engine oil pressure switch status reads CLOSED go to the next step. If the engine oil pressure switch status does not read CLOSED, replace the engine oil pressure switch.
3. Turn the ignition off. Disconnect the engine oil pressure switch harness connector. Disconnect the PCM (C1 connector) harness connector. Measure the resistance between ground and the engine oil pressure switch sense circuit. If the resistance is less than 5.0 ohms, repair the engine oil pressure switch sense circuit for a short to ground. If the resistance is more than 5.0 ohms, replace the powertrain control module. See «POWERTRAIN CONTROL MODULE»(ref-151757-S05932926212003020300000) under REMOVAL & INSTALLATION.

Low Oil Pressure Indicator Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition off. Perform the instrument cluster self test. Depress and hold the trip odometer reset button while turning the ignition on. If the low oil pressure indicator illuminated go to next step. If the low oil pressure indicator did not illuminate, go to step 4 .
2. Turn the ignition on. With the DRBIII in SENSORS, read the oil pressure switch state. Disconnect the engine oil pressure switch harness connector. With the DRBIII in SENSORS, read the oil pressure switch state. If the engine oil pressure switch changed states, replace the engine oil pressure switch. If the engine oil pressure switch did not change state, go to next step.
3. Turn the ignition off. Disconnect the engine oil pressure switch harness connector. Disconnect the PCM (C1 connector) harness connector. Measure the resistance of the engine oil pressure switch sense circuit. If the resistance is less than 5.0 ohms, replace the powertrain control module. See «POWERTRAIN CONTROL MODULE»(ref-151757-S05932926212003020300000) . If the resistance is more than 5.0 ohms, repair the engine oil pressure switch sense circuit for an open.
4. Turn the ignition off. Remove the instrument cluster. Remove the low oil pressure indicator LED. Using a DVOM, select DIODE MODE, and attach the leads across the LED. Ensure that the Red lead is on the positive of the LED. If the LED illuminated, replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the LED did not illuminate, replace the low oil pressure indicator LED. See «INSTRUMENT CLUSTER BULBS & LEDS»(ref-154922-S19816540572003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.

One Gauge Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, check Diagnostic Trouble Codes (DTC). If no PCM DTCs are displayed, go to next step. If any PCM DTCs are displayed, diagnose and repair as necessary. See «SELF-DIAGNOSTICS - NEON»(ref-133003) article in ENGINE PERFORMANCE.
2. Turn ignition off. Press trip reset button located at bottom of right gauge. Turn ignition on while releasing trip reset button. Gauges will move in increments and all indicators will turn on with exception of turn signal, high beam and foglight indicators. If suspect gauge operates properly, test is complete. If suspect gauge does not operate properly, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.

PRND Or Autostick Indicator Display Inaccurate Or Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

Note. Ensure that the TCM passes the shift lever test with the DRBIII before proceeding with this test.

1. Turn the ignition on. With the DRBIII, read DTCs. If the DRBIII displays any MIC, PCM, or TCM DTCs refer to the symptom identification for related DTCs. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table under SELF-DIAGNOSTIC SYSTEM. If the DRBIII did not displays any MIC, PCM, or TCM DTCs go to the next step.
2. Perform the instrument cluster self test. Turn the ignition off. Press and hold the trip reset button. Turn the ignition on. Observe the PRND/AutoStick VF display during the self test. If any part of the VF display failed to illuminate, replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the VF display failed to illuminate the condition is not present at this time. Monitor DRBIII parameters while wiggling the related wire harness. Refer to any technical service bulletins that may apply. Visually inspect the related wiring harness and connector terminals.

Rear Fog Lamp Indicator Inoperative (BUX Only)

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Ensure that the rear fog lamps operate correctly before proceeding with this test. Turn the ignition off. Disconnect the instrument cluster harness connector. Turn the rear fog lamp switch on. Using a 12-volt test light connected to ground, check the rear fog lamp indicator circuit. If the test light illuminated brightly, go to next step. If the test light did not illuminate brightly, repair the rear fog lamp indicator circuit for an open.
2. Turn the ignition off. Remove the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. Remove the inoperative LED. See «INSTRUMENT CLUSTER BULBS & LEDS»(ref-154922-S19816540572003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. Using a DVOM, select DIODE MODE, and attach the leads across the LED. Ensure that the Red lead is on the positive of the LED. If the LED illuminated, replace the instrument cluster. If the LED did not illuminate, replace the rear fog lamp indicator LED.

Seatbelt Indicator Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition off. Perform the instrument cluster self test. If the seat belt indicator illuminated, go to step 3 . If the seat belt indicator did not illuminate, go to the next step.
2. Turn the ignition off. Remove the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Remove the inoperative indicator. See «INSTRUMENT CLUSTER BULBS & LEDS»(ref-154922-S19816540572003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. Using a DVOM, select DIODE MODE, and attach the leads across the LED. Ensure that the Red lead is on the positive of the LED. If the LED illuminated, go to next step. If the LED did not illuminate, replace the seat belt indicator LED.
3. Turn the ignition off. Disconnect the instrument cluster harness connector. Disconnect the seat belt switch harness connector. Measure the resistance of the seat belt indicator circuit. If the resistance is less than 5.0 ohms, go to next step. If the resistance is more than 5.0 ohms, repair the seat belt indicator circuit for an open.
4. Turn the ignition off. Disconnect the seat belt switch harness connector. Measure the resistance between ground and the seat belt switch ground circuit. If the resistance is less than 5.0 ohms, go to next step. If the resistance is more than 5.0 ohms, repair the seat belt switch ground circuit for an open.
5. Turn the ignition off. Disconnect the seat belt switch harness connector. Measure the resistance of the seat belt switch between the indicator circuit pin and the ground circuit pin. If the resistance is less than 5.0 ohms, replace the instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If the resistance is more than 5.0 ohms, replace the seat belt switch.

VF Display Inoperative

Vacuum Fluorescent (VF) display is not repairable. If instrument cluster communicates on PCI bus, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. Perform BODY VERIFICATION TEST under VERIFICATION TESTS.

All Courtesy Lights Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Remove dome light lens. Remove and inspect dome light bulb. Replace bulb if necessary. Open any door. Using a voltmeter, check voltage on dome light connector fused B+ circuit. If voltage is more than 10 volts, reinstall dome light bulb and go to next step. If voltage is 10 volts or less, repair open wire.
2. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Connect a jumper wire between instrument cluster connector terminal No. 3, courtesy light control circuit and ground. (Scheme 8) If dome light does not illuminate, go to next step. If dome light illuminates, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.
3. Remove dome light lens. Remove dome light bulb. Using an ohmmeter, check resistance between dome light connector courtesy light control circuit and ground. If resistance is 5 ohms or more, repair open wire. If resistance is less than 5 ohms, problem does not exist at this time.

Courtesy Lights On At All Times

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

Note. Drivers door ajar switch output is OPEN when switch is open (door closed).

1. Close all doors. Ensure dimmer switch is in middle of adjustment range. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Using scan tool, select ELECTRO-MECHANICAL CLUSTER and INPUT/OUTPUTS. Check drivers door ajar switch, dome light and passengers door ajar switch outputs. If drivers door output is CLOSED, go to next step. If dome light output is ON, go to step 5. If passengers door output is CLOSED, go to step 7. If outputs are not as described, go to step 10.
2. Open drivers door. Disconnect door ajar switch. Using scan tool, check drivers door ajar switch output. If output is CLOSED, go to next step. If output is OPEN, replace drivers door switch.
3. Turn ignition off. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. On models equipped with remote keyless entry, disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 On all models, measure resistance between drivers door ajar switch harness connector terminal No. 1, sense circuit and ground. If resistance is more than 100 ohms, go to next step. If resistance is 100 ohms or less, repair short to ground on wire.
4. Connect instrument cluster connector. Using scan tool, check drivers door ajar switch output. If output is CLOSED, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article. If output is OPEN, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.
5. Remove instrument cluster. Ensure dimmer switch is in middle of adjustment range. Measure resistance between instrument cluster connector terminal No. 6, panel lights dimmer signal control circuit and ground. (Scheme 8) If resistance is less than 100 ohms, go to next step. If resistance is 100 ohms or more, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.
6. Disconnect 20-pin multifunction switch connector, located under upper steering column shroud. Measure resistance between instrument cluster connector terminal No. 6, panel lights dimmer signal control circuit and ground. If resistance is less than 100 ohms, repair short to ground on wire. If resistance is 100 ohms or more, replace multifunction switch. See «MULTIFUNCTION SWITCH»(ref-25125-S16903663192001010500000) under REMOVAL & INSTALLATION in STEERING COLUMN SWITCHES article.
7. Disconnect each passenger's door ajar switch, one at a time. Close all other doors. Using scan tool, check passenger's door ajar switch output. If output remains CLOSED, go to next step. If output switches to OPEN, replace passengers door switch that was disconnected when output changed.
8. Ensure all passenger's door switches are disconnected. Using scan tool, check passenger's door ajar switch output. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 If output remains CLOSED, go to next step. If output switches to OPEN, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.
9. Ensure all passenger's door switches and RKE module are disconnected. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Measure resistance between instrument cluster connector terminal No. 13, passenger's door ajar sense circuit and ground. (Scheme 8) If resistance is less than 100 ohms, replace short to ground on wire. If resistance is 100 ohms or more, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.
10. Ensure dimmer switch is in middle of adjustment range. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Using ohmmeter, check resistance between instrument cluster connector terminal No. 3, courtesy lights control circuit and ground. If resistance is less than 100 ohms, repair wire for short to ground. If resistance is 100 ohms or more, replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.

Illuminated Entry Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Check courtesy light operation. If courtesy lights are okay, go to next step. If courtesy lights do not operate properly, go to «ALL COURTESY LIGHTS INOPERATIVE»(ref-151757-S13628125462003020300000) .
2. Using scan tool, select THEFT ALARM, VTSS, MISC, ENABLE ILLUMINATED ENTRY. If illuminated entry is not enabled, use scan tool to enable. If illuminated entry is enabled, problem does not exist at this time. Check for intermittent problem in wiring.

Ambient Temperature Sensor Circuit Open

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition off. Disconnect the ambient temperature sensor harness connector. Measure the resistance of the ambient temperature sensor. See «AMBIENT TEMPERATURE SENSOR RESISTANCE»(ref-151757-S19703550672003040300000) table. If the ambient temperature sensor resistance is within the min/max specifications go to next step. If the ambient temperature sensor resistance is not within the min/max specifications, replace the ambient temperature sensor. AMBIENT TEMPERATURE SENSOR RESISTANCE Sensor Resistance k/ohms 10°C (50°F) 17.99-21.81 20°C (68°F) 11.37-13.61 25°C (77°F) 9.12-10.88 30°C (86°F) 7.37-8.75 40°C (104°F) 4.90-5.75 50°C (122°F) 3.33-3.88
2. Turn the ignition off. Disconnect and isolate the negative battery cable. Disconnect the ambient temperature sensor harness connector. Disconnect the compass/temperature mirror harness connector. Measure the resistance of the ambient temperature sensor signal circuit between the sensor connector and the compass/temperature mirror connector. If the resistance is more than 5.0 ohms, repair the ambient temperature sensor signal circuit for an open. If the resistance is less than 5.0 ohms, go to next step.
3. Turn the ignition off. Disconnect and isolate the negative battery cable. Disconnect the ambient temperature sensor harness connector. Disconnect the compass/temperature mirror harness connector. Measure the resistance of the ambient temperature sensor ground circuit between the sensor connector and the compass/temperature mirrorconnector. If the resistance is more than 5.0 ohms, repair the ambient temperature sensor ground circuit for an open. If the resistance is less than 5.0 ohms, replace the compass/temperature mirror.

Ambient Temperature Sensor Circuit Short

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition off. Disconnect the ambient temperature sensor harness connector. Measure the resistance of the ambient temperature sensor. See «AMBIENT TEMPERATURE SENSOR RESISTANCE»(ref-151757-S19703550672003040300000) table. If the ambient temperature sensor resistance is within the min/max specifications, go to next step. If the ambient temperature sensor resistance is not within the min/max specifications, replace the ambient temperature sensor.
2. Turn the ignition off. Disconnect and isolate the negative battery cable. Disconnect the ambient temperature sensor harness connector. Disconnect the compass/temperature mirror harness connector. Measure the resistance of the ambient temperature sensor signal circuit between the sensor connector and ground. If the resistance is less than 5.0 ohms, repair the ambient temperature sensor signal circuit for a short to ground. If the resistance is more than 5.0 ohms, go to the next step.
3. Turn the ignition off. Disconnect and isolate the negative battery cable. Disconnect the ambient temperature sensor harness connector. Disconnect the compass/temperature mirror harness connector. Measure the resistance of the ambient temperature sensor ground circuit between the sensor connector and the compass/temperature mirror connector. If the resistance is more than 5.0 ohms repair the ambient temperature sensor ground circuit for an open. If the resistance is less than 5.0 ohms, replace compass/temperature mirror.

Compass/Temperature Mirror Internal Failure

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

Perform the compass/temp mirror self-check. Turn the ignition on. Press and hold the left lamp button for 20-25 seconds. The display will illuminate each of the VF segments: CAL, ZONE, N, NE, E, SE, S, SW, W, NW, the numerals 0 through 9, C° and F°. The compass/temp mirror will test the memory and the compass. Press the left lamp button or cycle the ignition to exit the self-check. If the compass/temp mirror displays an "F" after the self-check, replace the compass/temp mirror. If the compass/temp mirror does not displays an "F" after the self-check, the test is complete.

Compass/Temperature Mirror Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition on. With the DRBIII, attempt to I/D or communicate with the compass/temperature mirror. If the DRBIII was able to communicate with the compass/temperature mirror, go to next step. If the DRBIII was not able to communicate with the compass/temperature mirror, diagnose and repair communication problem. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table in SELF-DIAGNOSTIC SYSTEM.
2. Turn the ignition off. Remove and inspect the No. 4 fuse in the fuse block. If the fuse is open, replace with the proper rated fuse. Turn the ignition on for approximately 1 minute. Turn the ignition off. Remove and inspect the No. 4 fuse in the fuse block. If the No. 4 fuse is open, check the fused B+ circuit for a short to ground and repair as necessary. If the fused B+ circuit is not shorted to ground, replace the compass/temperature mirror. If the No. 4 fuse is not open, go to next step.
3. Turn the ignition off. Remove and inspect the No. 7 fuse in the fuse block. If the fuse is open, replace with the proper rated fuse. Turn the ignition on for approximately 1 minute. Turn the ignition off. Remove and inspect the No. 7 fuse in the fuse block. If the No. 7 fuse is open, check the fused ignition switch output circuit for a short to ground and repair as necessary. If the fused ignition switch output circuit is not shorted to ground, replace the compass/temperature mirror. If the No. 7 fuse is not open, go to next step.
4. Turn the ignition off. Disconnect the compass/temperature mirror harness connector. Measure the voltage between the fused B+ circuit and ground. If the voltage is less than 10.5 volts, repair the fused B+ circuit for an open. If the voltage is more than 10.5 volts, go to the next step.
5. Turn the ignition off. Disconnect the compass/temperature mirror harness connector. Turn the ignition on. Measure the voltage between the fused ignition switch output circuit and ground. If the voltage is less than 10.5 volts, repair the fused ignition switch output circuit for an open. If the voltage is more than 10.5 volts, go to the next step.
6. Turn the ignition off. Disconnect the compass/temperature mirror harness connector. Measure the resistance between ground and the compass/temperature mirror ground circuit. If the resistance is more than 5.0 ohms, repair the ground circuit for an open. If the resistance is less than 5.0 ohms, replace the compass/temperature mirror.

Temperature Display Inoperative Or Wrong

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition off. Disconnect the ambient remperature sensor harness connector. Measure the resistance of the ambient temperature sensor. See «AMBIENT TEMPERATURE SENSOR RESISTANCE»(ref-151757-S19703550672003040300000) table in SELF-DIAGNOSTIC SYSTEM. If the ambient temperature sensor resistance is within the min/max specifications, go to next step. If the ambient temperature sensor resistance is not within the min/max specifications, replace the ambient temperature sensor.
2. Turn the ignition off. Disconnect the ambient temperature sensor harness connector. Measure the voltage between the ambient temperature sensor signal circuit and ground. If there is voltage present, repair the ambient temperature sensor signal circuit for a short to voltage. If there is no voltage present, go to next step.
3. Turn the ignition off. Disconnect and isolate the negative battery cable. Disconnect the ambient temperature sensor harness connector. Disconnect the compass/temperature mirror harness connector. Measure the resistance of the ambient temperature sensor signal circuit between the sensor connector and the compass/temperature mirror connector. If the resistance is more than 5.0 ohms, repair the ambient temperature sensor signal circuit for an open. If the resistance is less than 5.0 ohms, go to next step.
4. Turn the ignition off. Disconnect the ambient temperature sensor harness connector. Disconnect the compass/temperature mirror harness connector. Measure the resistance between ground and the ambient temperature sensor signal circuit. If the resistance is less than 5.0 ohms, repair the ambient temperature sensor signal circuit for a short to ground. If the resistance is more than 5.0 ohms, go to next step.
5. Turn the ignition off. Disconnect and isolate the negative battery cable. Disconnect the ambient temperature sensor harness connector. Disconnect the compass/temperature mirror harness connector. Measure the resistance between the ambient temperature sensor ground circuit and the sensor signal circuit. If the resistance is less than 10,000 ohms, repair the ambient temperature sensor signal circuit for a short to the sensor ground circuit. If the resistance is more than 10,000 ohms, go to next step.
6. Turn the ignition off. Disconnect and isolate the negative battery cable. Disconnect the ambient temperature sensor harness connector. Disconnect the compass/temperature mirror harness connector. Measure the resistance of the ambient temperature sensor ground circuit between the sensor connector and the compass/temperature mirror connector. If the resistance is more than 5.0 ohms, repair the ambient temperature sensor ground circuit for an open. If the resistance is less than 5.0 ohms, the test is complete.

POWER DOOR LOCKS/REMOTE KEYLESS ENTRY

Note. Ensure battery is fully charged before performing any test. For component locations, see COMPONENT LOCATIONS .

Note. For power door locks and Remote Keyless Entry (RKE) wiring diagram, see POWER DOOR LOCKS in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

Body Style Mismatch

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

The RKE module configuration does not agree with the PCM message as to body style. With the DRBIII, select: THEFT ALARM, CONFIGURE MODULE and follow instructions on the screen.

Driver Door Switch Shorted Or Stuck

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition on. With the DRBIII, erase DTCs. Operate the door locks several times from the driver door lock switch and the cylinder lock switch if VTSS equipped. With the DRBIII, read DTCs. If the DRBIII displays DRV DOOR SWITCH SHORTED OR STUCK, go to next step. If the DRBIII does not display DRV DOOR SWITCH SHORTED OR STUCK, the causes for setting this code are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. See «POWER DOOR LOCKS»(ref-141298-S04023256622003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
2. Disconnect the Remote Keyless Entry (RKE) module connector. Turn the ignition off. Measure the resistance between ground and the driver door switch multiplex circuit in the RKE module connector. If the resistance is less than 8000 ohms, go to next step. If the resistance is more than 8000 ohms replace the remote keyless entry module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.
3. If the vehicle is equipped with the vehicle theft security system, go to next step. If the vehicle is not equipped with the vehicle theft security system, go to step 5 .
4. Turn the ignition off. Disconnect the remote keyless entry module connector. Disconnect the cylinder lock switch connector. Measure the resistance between ground and the driver door switch multiplex circuit. If the resistance is less than 8000 ohms, go to next step. If the resistance is more than 8000 ohms, replace the cylinder lock switch.
5. Turn the ignition off. Disconnect the door lock switch connector. Disconnect the remote keyless entry module connector. Measure the resistance between ground and the driver door switch multiplex circuit. If the resistance is less than 8000 ohms, repair the driver door switch multiplex circuit for a short to ground. If the resistance is more than 8000 ohms, replace the door lock switch.

Incorrect Module Type Configuration For Part Number

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

Ensure the module type corresponds with the correct module part number. If the module type corresponds with the module part number, the RKE module is defective. If there are no possible causes remaining, replace the remote keyless entry module. See REMOTE KEYLESS ENTRY MODULE under REMOVAL & INSTALLATION.

Interior Decklid Release Switch Shorted Or Stuck

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. With the DRBIII, erase DTCs. Turn the ignition on. Operate the decklid release from the interior switch. With the DRBIII, read DTCs. If the DRBIII displays INTERIOR DECKLID RELEASE SWITCH SHORTED OR STUCK, go to next step. If the DRBIII does not display INTERIOR DECKLID RELEASE SWITCH SHORTED OR STUCK, the causes for setting this code are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. See «POWER DOOR LOCKS»(ref-141298-S04023256622003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
2. Disconnect the interior decklid release switch connector. Turn the ignition on. Measure the voltage between ground and the decklid release relay control circuit in the switch connector. If the voltage is more than 10 volts, replace the decklid release switch. If the voltage is less than 10 volts, go to next step.
3. Disconnect the RKE module connector. Disconnect the interior decklid release switch connector. Measure the resistance between ground and the decklid release relay control circuit. If the resistance is less than 1000 ohms, repair the decklid release relay control circuit for a short to ground. If the resistance is more than 1000 ohms, replace the remote keyless entry module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.

Module Not Configured For RKE

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

The RKE transmitter will not program because the module is not configured for RKE. Using the DRBIII, configure the module for remote keyless entry.

No Airbag Messages Recieved

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition on With the DRB, attempt to communicate with the ACM. If the DRB was able to I/D or communicate with the ACM, go to the next step. If the DRB was not able to I/D or communicate with the ACM, diagnose and repair communication problem. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table in SELF-DIAGNOSTIC SYSTEM.
2. With the DRB, erase DTCs. Turn the ignition on and wait approximately 1 minute. With the DRB, read DTCs. If this DTC reset, replace the remote keyless entry module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. If this DTC did not reset, the test is complete.

No PCM Messages Recieved

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition on. With the DRB, enter SYSTEM MONITORS, then J1850 MODULE SCAN. If the PCM is present on the bus, use DRB to erase DTCs. Cycle the ignition switch and check for DTCs. If DTC resets, replace the RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) , under REMOVAL & INSTALLATION. If the PCM is not present on the bus, go to next step.
2. Turn the ignition on. With the DRB, attempt to communicate with the PCM. If the DRB was able to communicate with the PCM, go to next step. If the DRB was not able to communicate with the PCM, diagnose and repair commubication problem. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table in SELF-DIAGNOSTIC SYSTEM.
3. Turn the ignition off. Disconnect the PCM harness connectors. Disconnect the RKE module harness connector. Measure the resistance of the PCI Bus circuit between the RKE module connector and the PCM connector. If the resistance is less than 5 ohms, replace the powertrain control module. See «POWERTRAIN CONTROL MODULE»(ref-151757-S05932926212003020300000) under REMOVAL & INSTALLATION. If the resistance is more than 5 ohms, repair the PCI Bus circuit for an open.

No SKIM Messages Recieved

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition on. With the DRB, attempt to communicate with the SKIM. If the DRB was able to I/D or communicate with the SKIM, go to the next step. If the DRB was not able to I/D or communicate with the SKIM, diagnose and repair commubication problem. See «SYMPTOM INDEX»(ref-151757-S31716700552003020300000) table in SELF-DIAGNOSTIC SYSTEM.
2. With the DRB, erase DTCs. Turn the ignition on and wait approximately 1 minute. With the DRB, read DTCs. If this DTC reset, replace the remote keyless entry module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. If the DTC did not reset, the test is complete.

Passenger Door Switch Shorted Or Stuck (BUX)

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition on. With the DRBIII, erase DTCs. Operate the door locks several times from the passenger door lock switch and the cylinder lock switch if VTSS equipped. With the DRBIII, read DTCs. If the DRBIII displays: PASS DOOR SWITCH SHORTED OR STUCK, go to next step. If the DRBIII does not display: PASS DOOR SWITCH SHORTED OR STUCK, the causes for setting this code are not present at this time. Using the wiring diagram as a guide, inspect the wiring and connectors. See «POWER DOOR LOCKS»(ref-141298-S04023256622003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
2. Disconnect the remote keyless entry module connector. Turn the ignition off. Measure the resistance between ground and the passenger door switch multiplex circuit in the RKE module connector If the resistance is less than 8000 ohms, go to the next step. If the resistance is more than 8000 ohms, replace the remote keyless entry module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) .
3. If vehicle is equipped with the vehicle theft security system, go to next step. If vehicle is not equipped with the vehicle theft security system, go to step 5 .
4. Turn the ignition off. Disconnect the remote keyless entry module connector. Disconnect the cylinder lock switch connector. Measure the resistance between ground and the passenger door switch multiplex circuit. If the resistance is less than 8000 ohms, go to next step. If the resistance is more than 8000 ohms, replace the cylinder lock switch.
5. Turn the ignition off. Disconnect the door lock switch connector. Disconnect the remote keyless entry module connector. Measure the resistance between ground and the passenger door switch multiplex circuit. If the resistance is less than 8000 ohms, repair the passenger door switch multiplex circuit for a short to ground. If the resistance is more than 8000 ohms, replace the door lock switch.

Passenger Door Switch Shorted Or Stuck (Non BUX)

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn the ignition on. With the DRBIII, erase DTCs. Operate the door locks several times from the passenger door lock switch. With the DRBIII, read DTCs. If the DRBIII displays: PASS DOOR SWITCH SHORTED OR STUCK, go to next step. If the DRBIII does not displays: PASS DOOR SWITCH SHORTED OR STUCK, the causes for setting this code are not present at this time. Using the wiring diagram as a guide, inspect the wiring and connectors. See «POWER DOOR LOCKS»(ref-141298-S04023256622003022100000) in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
2. Disconnect the remote keyless entry module connector. Turn the ignition off. Measure the resistance between ground and the passenger door switch multiplex circuit in the RKE module connector. If the resistance is less than 2000 ohms, go to next step. If the resistance is more than 2000 ohms, replace the remote keyless entry module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.
3. Turn the ignition off. Disconnect the door lock switch connector. Disconnect the remote keyless entry module connector. Measure the resistance between ground and the passenger door switch multiplex circuit. If the resistance is less than 2000 ohms, repair the passenger door switch multiplex circuit for a short to ground. If the resistance is more than 2000 ohms, replace the door lock switch.

All Door Locks Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Test fuse No. 14 in the fuse block. If the fuse is open, go to next step. If the fuse is not open, go to step 13.
2. Turn ignition off. Remove fuse No. 14 in the fuse block. Measure the resistance of the fused B+ circuit from the fuse output cavity to ground. If the resistance is less than 100 ohms, go to next step. If the resistance is more than 100 ohms, go to step 4.
3. Turn ignition off. Remove fuse No. 14 in the fuse block. Disconnect the RKE module connector. see scheme 4 Measure the resistance of the fused B+ circuit (cavity No. 3) in the RKE connector to ground. If the resistance is less than 100 ohms, repair fused B+ wire for a short to ground and replace blown fuse. If the resistance is more than 100 ohms, replace the remote keyless entry module and replace the blown fuse.
4. Replace fuse No. 14. Operate all the door locks including the decklid release (if equipped). If the system operates properly without blowing the fuse, the test is complete. If fuse #14 blows again, check with the customer as to when it blew and rerun this test. If the system does not operate properly without blowing the fuse, go to next step.
5. Disconnect the remote keyless entry module connector. Measure the resistance of the decklid release relay output circuit to ground. If the resistance is less than 0.5 ohm, go to next step. If the resistance is more than 0.5 ohm, go to step 7.
6. Disconnect the remote keyless entry module connector. Disconnect the decklid solenoid connector. Measure the resistance of the decklid release relay output circuit to ground. If the resistance is less than 100 ohms, repair the decklid release relay output wire for a short to ground. If the resistance is more than 100 ohms, replace the decklid release solenoid.
7. Turn ignition off. Disconnect the remote keyless entry module connector. Measure the resistance of the driver door unlock relay output circuit in the RKE module connector to ground. If the resistance is less than 1000 ohms, repair the driver door unlock relay output wire for a short to ground. If the resistance is more than 1000 ohms, go to next step.
8. Disconnect the remote keyless entry module connector. Measure the resistance of the door lock relay output circuit in the RKE module connector to ground. If the resistance is less than 1000 ohms, repair the door lock relay output wire for a short to ground. If the resistance is more than 1000 ohms, go to next step.
9. Turn ignition off. Disconnect the remote keyless entry module connector. Measure the resistance of the door unlock relay output circuit in the RKE module connector to ground. If the resistance is less than 1000 ohms, repair the door unlock relay output wire for a short to ground. If the resistance is more than 1000 ohms, go to next step.
10. Disconnect the remote keyless entry module connector. Measure the resistance between the driver door unlock relay output circuit and the door lock relay output circuit in the RKE module connector. If the resistance is less than 3.5 ohms, repair the driver door unlock relay output circuit for a short to the door lock relay output circuit. If the resistance is more than 3.5 ohms, go to next step.
11. Disconnect the remote keyless entry module connector. Measure the resistance between the door unlock relay output circuit and the door lock driver relay output in the RKE module connector. If the resistance is less than 1.5 ohms, repair the door unlock relay output circuit for a short to the door lock relay output circuit. If the resistance is more than 1.5 ohms, go to next step.
12. If there are no possible causes remaining, replace the remote keyless entry module and replace the fuse. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000).
13. Disconnect the RKE module connector. Using a test light, test both sides of fuse #14 to ensure the fuse is okay and that the 12 volt supply is not open. Measure the voltage of the fused B+ circuit (cavity No. 3) in the RKE module connector. If the voltage is more than 10 volts, go to next step. If the voltage is less than 10 volts, repair the open fused B+ wire from the RKE module connector to the fuse.
14. Turn ignition off. Disconnect the RKE module connector. Measure the resistance of the ground circuit (cavity No 8) in the RKE module connector. If the resistance is less than 5 ohms, go to next step. If the resistance is more than 5 ohms, repair the open ground circuit.
15. Disconnect the remote keyless entry module connector. Measure the resistance between the driver door unlock relay output circuit and the door lock relay output circuit in the RKE module connector. If the resistance is less than 17 ohms, go to the step. If the resistance is more than 17 ohms, repair the open door lock relay output circuit.
16. If there are no possible causes remaining, replace the remote keyless entry module (relays open). See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.

All Doors (Except Drivers) Fail To Lock & Unlock

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Lower passenger's window. Connect a jumper wire between RKE module connector terminals No. 4, door lock driver circuit and No. 8, ground circuit. (Scheme 9) Manually lock passenger's doors. Connect a second jumper wire to RKE module connector terminal No. 6, door unlock driver circuit. Observe passenger's door locks while momentarily touching other end of second jumper wire to RKE module connector terminal No. 3, fused B+ circuit. Passenger's doors should unlock. Disconnect jumper wires and go to next step.
2. Connect a jumper wire between RKE module connector terminals No. 6, door unlock driver circuit and No. 8, ground circuit. Manually unlock passenger doors. Connect second jumper wire to RKE module connector terminal No. 4, door lock driver circuit. Observe passenger's door locks while momentarily touching other end of second jumper wire to RKE module connector terminal No. 3, fused B+ circuit. Passenger's doors should lock. If passenger's doors do not lock and unlock, go to next step. If passenger's doors lock and unlock, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.
3. Ensure ignition is off. Remove passenger's inner door trim to gain access to suspect door lock motor. See «DOOR TRIM PANEL»(ref-151757-S24469397312003020300000) under REMOVAL & INSTALLATION. Disconnect door lock motor connector. Using an ohmmeter, check resistance of door unlock driver circuit between RKE module connector terminal No. 6 and door lock motor connector terminal No. 3. (Scheme 17) If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
4. Using ohmmeter, check resistance of door lock driver circuit between RKE module connector terminal No. 4 and door lock motor connector terminal No. 4. If resistance is less than 5 ohms, replace door locks as necessary. If resistance is 5 ohms or more, repair open wire.

Scheme 17

All Doors (Except Drivers) Fail To Unlock

Turn ignition off. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Using an ohmmeter, check resistance between RKE module connector terminal No. 6, door unlock driver circuit and ground. (Scheme 9) If resistance is less than 1000 ohms, repair wire for short to ground. If resistance is 1000 ohms or more, replace RKE module. See REMOTE KEYLESS ENTRY MODULE under REMOVAL & INSTALLATION. After repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

All Doors Fail To Lock

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Using ohmmeter, check resistance between RKE module connector terminal No. 4, door lock driver circuit and ground. (Scheme 9) If resistance is 1000 ohms or more, go to next step. If resistance is less than 1000 ohms, repair short to ground on wire.
2. Using ohmmeter, check resistance between RKE module connector terminals No. 4, door lock driver circuit and No. 16, deck lid release driver circuit. If resistance is 100 ohms or more, go to next step. If resistance is less than 100 ohms, repair short between circuits.
3. Using ohmmeter, check resistance between RKE module connector terminals No. 5, driver's door unlock driver circuit and No. 16, deck lid release driver circuit. If resistance is 100 ohms or more, go to next step. If resistance is less than 100 ohms, repair short between circuits.
4. Using ohmmeter, check resistance between RKE module connector terminals No. 6, door unlock driver circuit and No. 16, deck lid release driver circuit. If resistance is less than 100 ohms, repair short between circuits. If resistance is 100 ohms or more, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.

All Locks Inoperative From A Lock Switch

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, check DOOR LOCK SW voltage. If voltage is 0-3.7 volts, go to next step. If voltage is 4.9-5.5 volts, go to step 6. If voltage is more than 5.6 volts, go to step 9.
2. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 If driver's switch is not operating, use ohmmeter to check resistance between RKE module connector terminal No. 10, driver's door switch multiplex circuit and ground. (Scheme 9) If resistance is less than 1000 ohms, go to next step. If resistance is 1000 ohms or more, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. If passenger's switch is not operating, use ohmmeter to check resistance between RKE module connector terminal No. 11, passenger's door switch multiplex circuit and ground. If resistance is less than 1000 ohms, go to next step. If resistance is 1000 ohms or more, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.
3. Disconnect suspect 3-pin door switch connector. If driver's switch is not operating, use ohmmeter to check resistance between RKE module connector terminal No. 10, driver's door switch multiplex circuit and ground. If resistance is less than 1000 ohms, go to next step. If resistance is 1000 ohms or more, replace driver's door switch. If passenger's switch is not operating, use ohmmeter to check resistance between RKE module connector terminal No. 11, passenger's door switch multiplex circuit and ground. If resistance is less than 1000 ohms, go to next step. If resistance is 1000 ohms or more, replace passenger's door switch.
4. Access door lock cylinder switch. See «DOOR TRIM PANEL»(ref-151757-S24469397312003020300000) under REMOVAL & INSTALLATION. Disconnect suspect 2-pin door lock cylinder switch connector. If driver's lock cylinder switch is not operating, use ohmmeter to check resistance between RKE module connector terminal No. 10, driver's door switch multiplex circuit and ground. If resistance is 1000 ohms or more, replace driver's door lock cylinder switch. If resistance is less than 1000 ohms, go to next step. If passenger's lock cylinder switch is not operating, use ohmmeter to check resistance between RKE module connector terminal No. 11, passenger's door lock cylinder switch multiplex circuit and ground. If resistance is 1000 ohms or more, replace passenger's door lock cylinder switch. If resistance is less than 1000 ohms, go to next step.
5. Repair short to ground on wire between driver's door lock cylinder switch or passenger's door lock cylinder switch and RKE module.
6. Disconnect suspect 3-pin door switch connector. Use ohmmeter to check resistance between suspect switch harness connector terminal No. 3, ground circuit and ground. (Scheme 18) If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open on wire.
7. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Using ohmmeter, check resistance between RKE module connector terminal No. 10 (driver's) or No. 11 (passenger's), door switch multiplex circuit and suspect door switch harness connector terminal No. 2. (Scheme 9) If resistance is less than 5 ohms, go to next step. If resistance is 1000 ohms or more, repair open on wire.
8. Replace driver's or passenger's door switch.
9. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Disconnect suspect 3-pin door switch connector. Turn ignition off. Using voltmeter, check voltage between RKE module connector terminal No. 10 (driver's) or No. 11 (passenger's), door switch multiplex circuit and ground. (Scheme 9) If voltage exists, repair short to power on wire. If voltage does not exist, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.

Scheme 18

Automatic Door Lock Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, select BODY, THEFT ALARM, VTSS, MISCELLANEOUS, then AUTO DOOR LOCKS. If scan tool displays AUTO DOOR LOCKS: ENABLED, go to next step. If scan tool displays AUTO DOOR LOCKS: DISABLED, use scan tool to enable automatic door locks.
2. Ensure all door's are closed. Using scan tool, select DOOR AJAR states. If any door states display OPEN, go to next step. If all door states display CLOSED, go to «COURTESY LIGHTS ON AT ALL TIMES»(ref-151757-S40671867312003020300000) under INTERIOR LIGHTING.
3. Using scan tool read ENGINE Diagnostic Trouble Codes (DTC). If any ENGINE DTCs are displayed, perform corresponding test in «SELF-DIAGNOSTICS - NEON»(ref-133003) article in ENGINE PERFORMANCE. If no ENGINE DTCs are displayed, replace Remote Keyless Entry (RKE) module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.

Deck Lid Solenoid Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Disconnect 2-pin deck lid solenoid connector. Deck lid solenoid is an integral part of deck lid (trunk) latch assembly. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Connect a 12-volt test light between deck lid solenoid connector terminals No. 1, deck lid release relay output circuit and No. 2, ground circuit. Turn ignition on. Using scan tool actuate deck lid solenoid. If test light does not illuminate, go to next step. If test light illuminates, replace deck lid release solenoid. See «TRUNK RELEASE SOLENOID»(ref-151757-S36894057202003020300000) under REMOVAL & INSTALLATION.
2. Turn ignition off. Connect a 12-volt test light between deck lid solenoid connector terminal No. 2, ground circuit and ground. If test light illuminates, go to next step. If test light does not illuminate, repair open wire.
3. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Using ohmmeter, check resistance of deck lid release relay output circuit between deck lid solenoid connector terminal No. 1 and RKE module connector terminal No. 16. (Scheme 9) If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open on wire.
4. Replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.

Door's Lockable With Key In Ignition & Driver's Door Open

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Open driver's door. Using scan tool, select BODY, ELECTRO/MECH CLUSTER then INPUT/OUTPUT. Read scan tool DR DOOR AJAR SW status. If scan tool does not display DR DOOR AJAR SW: CLOSED, go to next step. If scan tool displays DR DOOR AJAR SW: CLOSED, go to step 5.
2. Open driver's door. Access driver's door lock motor. See «DOOR TRIM PANEL»(ref-151757-S24469397312003020300000) under REMOVAL & INSTALLATION. Disconnect 4-pin driver's door lock motor/ajar switch connector. Connect a jumper wire between driver's door lock motor/ajar switch connector terminal No. 1, driver's door ajar switch sense circuit and ground. (Scheme 17) Using scan tool, select BODY, ELECTRO/MECH CLUSTER then INPUT/OUTPUT. Read scan tool DR DOOR AJAR SW status. If scan tool displays DR DOOR AJAR SW: OPEN, go to next step. If scan tool displays DR DOOR AJAR SW: CLOSED, replace driver's door ajar switch.
3. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Using an ohmmeter, check resistance of driver's door ajar switch sense circuit between driver's door ajar switch connector terminal No. 1 and instrument cluster connector terminal No. 24. (Scheme 8) If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open driver's door ajar switch sense circuit.
4. Replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.
5. Ensure ignition key is in ignition switch. Turn ignition on. Using scan tool, read KEY-IN IGN, status. If scan tool displays KEY-IN IGN: CLOSED, go to next step. If scan tool does not display KEY-IN IGN: CLOSED, go to step 9.
6. Disconnect 10-pin ignition switch connector. Connect a jumper wire between ignition switch connector terminal No. 5, key-in ignition switch sense circuit and ground. (Scheme 19) Using scan tool, read KEY-IN IGN status. If scan tool displays KEY-IN IGN: OPEN, go to next step. If scan tool displays KEY-IN IGN: CLOSED, replace ignition switch. See «IGNITION SWITCH»(ref-25125-S07961357932001010500000) under REMOVAL & INSTALLATION in STEERING COLUMN SWITCHES - NEON article.
7. Remove jumper wire. Using ohmmeter, check resistance of key-in ignition switch sense circuit between instrument cluster connector terminal No. 23 and ignition switch connector terminal No. 5. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
8. Replace instrument cluster. See «INSTRUMENT CLUSTER»(ref-154922-S13571874892003060200000) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS article.
9. Disconnect 4-pin drivers door lock motor/ajar switch connector. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Using ohmmeter, check resistance of drivers door ajar switch sense circuit between door lock motor/ajar switch connector terminal No. 1 and RKE module connector terminal No. 25. (Scheme 9)and (Scheme 17). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
10. Replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.

Scheme 19

Drivers Door Fails To Lock & Unlock

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Turn ignition off. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Lower driver's window. Connect a jumper wire between RKE module connector terminals No. 4, door lock driver circuit and No. 12, ground circuit. (Scheme 9) Manually lock driver's door. Connect second jumper wire to RKE module connector terminal No. 5, driver's door unlock driver circuit. Observe driver's door lock while momentarily touching other end of second jumper wire to RKE module connector terminal No. 3, fused B+ circuit. Door should unlock. Rever'se jumper wires at RKE module connector. Door should lock. If driver's door does not lock and unlock, go to next step. If driver's door locks and unlocks, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.
2. Reconnect RKE module connector. Remove driver's inner door trim to gain access to driver's door lock motor. See «DOOR TRIM PANEL»(ref-151757-S24469397312003020300000) under REMOVAL & INSTALLATION. Disconnect door lock motor connector. Connect a 12-volt test light between door lock motor connector terminals No. 3, driver's door unlock driver circuit and No. 4, door lock driver circuit. (Scheme 17) Press door lock switch to lock and unlock positions. If test light does not illuminate when door lock switch is pressed, go to next step. If test light illuminates when door lock switch is pressed, replace door lock motor.
3. Disconnect RKE module connector. Using ohmmeter, check resistance of door lock driver circuit between RKE module connector terminal No. 4 and driver's door lock motor connector terminal No. 4. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
4. Using an ohmmeter, check resistance of driver's door unlock driver circuit between RKE module connector terminal No. 5 and driver's door lock motor connector terminal No. 3. If resistance is less than 5 ohms, test is complete. If resistance is 5 ohms or more, repair open wire.

Driver's Door Fails To Unlock

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

Turn ignition off. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Using an ohmmeter, check resistance between RKE module connector terminal No. 5, driver's door unlock driver circuit and ground. (Scheme 9) If resistance is less than 1000 ohms, repair wire for short to ground. If resistance is 1000 ohms or more, replace RKE module. See REMOTE KEYLESS ENTRY MODULE under REMOVAL & INSTALLATION.

One Passenger's Door Fails To Lock & Unlock

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Remove the inner door trim panel to gain access to the door lock motor connector. See «DOOR TRIM PANEL»(ref-151757-S24469397312003020300000) . Disconnect the appropriate door lock motor connector. Connect a test light between the door lock relay output and the door unlock relay output circuits in the door lock motor connector. Press the door lock switch to the lock and unlock positions. If the test light illuminates when the lock switch is pressed in both directions, replace the door lock motor. If the test light does not illuminate when the lock switch is pressed in both directions, go to next step.
2. Turn ignition off. Measure the resistance of the door lock relay output wire between the RKE module connector and the door lock motor connector. If the resistance is less than 5 ohms, go to next step. If the resistance is more than 5 ohms, repair the door lock relay output wire for an open.
3. Turn ignition off. Measure the resistance of the door unlock relay output wire between the RKE module connector and the door lock motor connector. If the resistance is less than 5 ohms, go to next step. If the resistance is more than 5 ohms, repair the door unlock relay output wire for an open.
4. Turn ignition off. Measure the resistance of the door unlock relay output wire to ground. If the resistance is less than 1000 ohms, repair the door unlock relay output wire for a short to ground. If the resistance is more than 1000 ohms, go to next step.
5. Turn ignition off. Measure the resistance between the door unlock relay output circuit and the door lock relay output circuit. If the resistance is less than 1000 ohms, repair the door unlock relay output wire for a short to the door lock relay output wire. If the resistance is more than 1000 ohms, go to next step.
6. Turn ignition off. Measure the resistance of the door lock relay output wire to ground. If the resistance is less than 1000 ohms, repair the door lock relay output wire for a short to ground. If the resistance is more than 1000 ohms, the test is complete.

RKE Transmitter Inoperative

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Ensure Remote Keyless Entry (RKE) module is configured and is in customer mode. Using a voltmeter, check voltage across both RKE transmitter batteries. If voltage is 3 volts or more on both batteries, go to next step. If voltage is less than 3 volts on either battery, replace batteries as needed. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, select BODY, THEFT ALARM, MISC and RKE fob and module test. Follow scan tool instructions. Using RKE transmitter, lock and unlock doors. If locks do not operate properly, go to next step. If locks operate properly, reprogram original transmitter. See «REMOTE KEYLESS ENTRY TRANSMITTER»(ref-151757-S26164238552003020300000) under PROGRAMMING. Program all transmitters to be used on this vehicle.
2. Substitute a known-good RKE transmitter programmed to vehicle. Using scan tool, select BODY, THEFT ALARM, MISC and RKE fob and module test. Follow scan tool instructions. Using RKE transmitter, lock and unlock doors. If locks do not operate properly, go to next step. If locks operate properly, replace transmitter. Program all transmitters to be used on this vehicle. See «REMOTE KEYLESS ENTRY TRANSMITTER»(ref-151757-S26164238552003020300000) under PROGRAMMING.
3. Replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.

VEHICLE THEFT SECURITY SYSTEM

Note. Ensure battery is fully charged before performing any test. For component locations, see COMPONENT LOCATIONS table under COMPONENT LOCATIONS.

Note. For Vehicle Theft Security System (VTSS) wiring diagram, see ANTI-THEFT in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

Hood Ajar Switch Missing (BUX Only)

Note. After making any repairs, perform VTSS VERIFICATION TEST under VERIFICATION TESTS.

1. If hood was open during Remote Keyless Entry (RKE) module configuration, go to next step. If RKE configuration was not performed with hood open, open hood and program RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S12762454952003020300000) under PROGRAMMING.
2. Open hood. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, select VEHICLE THEFT, VTSS then INPUT/OUTPUT. Read scan tool HOOD AJAR SW status. If scan tool displays HOOD AJAR SW: OPEN, go to next step. If scan tool displays HOOD AJAR SW: CLOSED, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.
3. Turn ignition off. Disconnect 2-pin hood ajar switch connector. Using ohmmeter, check resistance between hood ajar switch connector terminal No. 2, ground circuit and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
4. Disconnect 26-pin RKE module connector, located under center of instrument panel top cover. see scheme 4 Using ohmmeter, check resistance of hood ajar sense circuit between RKE module connector terminal No. 23 and hood ajar switch connector terminal No. 1. (Scheme 9) If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair wire.
5. Connect RKE module. Using a jumper wire, connect hood ajar switch connector terminal No. 1, hood ajar sense circuit to ground. Turn ignition on. Using scan tool, select VEHICLE THEFT, VTSS then INPUT/OUTPUT. Read scan tool HOOD AJAR SW status. If scan tool displays HOOD AJAR SW: CLOSED, replace hood ajar switch. If scan tool displays DR HOOD AJAR SW: OPEN, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.

VTSS Previously Enabled

Note. After making any repairs, perform VTSS VERIFICATION TEST under VERIFICATION TESTS.

Note. DTC is set when a used Remote Keyless Entry (RKE) module that was programmed for a Vehicle Theft Security System (VTSS) equipped vehicle is installed in a non-VTSS equipped vehicle and programming is attempted.

Program (configure) Remote Keyless Entry (RKE) module. See REMOTE KEYLESS ENTRY MODULE under PROGRAMMING. If scan tool displays VTSS PREVIOUSLY ENABLED, non-VTSS RKE module is installed. Install correct RKE module. If scan tool does not display VTSS PREVIOUSLY ENABLED, no problem is found at this time. Test is complete.

Headlights Fail To Flash During Alarm

1. Ensure low beam headlights are operating properly. Repair low beam headlights as necessary. If low beam headlights are operating properly, go to next step.
2. Turn ignition off. Disconnect 26-pin Remote Keyless Entry (RKE) module connector, located under center of instrument panel top cover. see scheme 4 Connect a 12-volt test light between RKE module connector terminal No. 1, dimmer switch low beam output circuit and ground. (Scheme 9) Turn low beam headlights on. If test light illuminates, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. If test light does not illuminate, repair open wire. After making any repairs, perform «VTSS VERIFICATION TEST»(ref-151757-S33924630232003020300000) under VERIFICATION TESTS.

Horn Fails To Sound During Alarm

1. Ensure horn is operating properly. Repair horn system as necessary. If horn is operating properly, go to next step.
2. Turn ignition off. Disconnect 26-pin Remote Keyless Entry (RKE) module connector, located under center of instrument panel top cover. see scheme 4 Connect one end of a jumper wire to RKE module connector terminal No. 18, horn relay control circuit. (Scheme 9) Momentarily touch other end of jumper wire to ground. If horn sounds when jumper wire is grounded, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. If horn does not sound when jumper wire is grounded, repair open wire. After making any repairs, perform «VTSS VERIFICATION TEST»(ref-151757-S33924630232003020300000) under VERIFICATION TESTS.

Open Drivers Door Fails To Trip Alarm

Note. After making any repairs, perform VTSS VERIFICATION TEST under VERIFICATION TESTS.

1. Disconnect driver's door ajar switch connector. Using a test light connected to battery voltage, probe ajar switch harness connector terminal No. 2, ground circuit. If test light illuminates, go to next step. If test light does not illuminate, repair open wire.
2. Connect a jumper wire between ajar switch harness connector terminals No. 1, driver's door ajar sense circuit and No. 2, ground circuit. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, select BODY, ELECTRO/MECH CLUSTER, then INPUT/OUTPUT. Read DR DOOR AJAR SW state. If scan tool displays DR DOOR AJAR SW: OPEN, go to next step. If scan tool displays DR DOOR AJAR SW: CLOSED, replace drivers door ajar switch.
3. Turn ignition off. Disconnect 26-pin Remote Keyless Entry (RKE) module connector, located under center of instrument panel top cover. see scheme 4 Using ohmmeter, check resistance of driver's door ajar switch sense circuit between driver's door ajar switch connector and RKE module connector terminal No. 25. (Scheme 9) If resistance is less than 5 ohms, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. If resistance is 5 ohms or more, repair open on wire.

Open Passengers Door Fails To Trip Alarm

Note. After making any repairs, perform VTSS VERIFICATION TEST under VERIFICATION TESTS.

1. Close all passenger's doors. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. see scheme 2 Turn ignition on. Using scan tool, select BODY, ELECTRO/MECH CLUSTER, then INPUT/OUTPUT. Read PASS DOOR AJAR SW status. Observe scan tool display while each passenger's door is opened. If scan tool does not display PASS DOOR AJAR SW: CLOSED while each passengers door is open, go to appropriate step. See «PASSENGERS DOOR TEST»(ref-151757-S18517178102001010500000) table. If scan tool displays PASS DOOR AJAR SW: CLOSED while each door is open, recheck system operation. If any passenger's door will not trip alarm, replace Remote Keyless Entry (RKE) module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. PASSENGERS DOOR TEST Door Go to Step Right Front 2 Left Rear 4 Right Rear 6 All Passenger's Doors 8
2. Open Right Front (RF) door. Ensure all other passengers doors are closed. Disconnect RF door ajar switch connector. Using a test light connected to battery voltage, probe RF door ajar switch connector terminal No. 2, ground circuit. If test light illuminates, go to next step. If test light does not illuminate, repair open on wire.
3. Connect a jumper wire between RF door ajar switch connector terminal No. 1, sense circuit and ground. Using scan tool, read PASS DOOR AJAR SW status. If scan tool displays PASS DOOR AJAR SW: CLOSED, replace RF door ajar switch. If scan tool does not display PASS DOOR AJAR SW: CLOSED, repair open on wire.
4. Open Left Rear (LR) door. Ensure all other passenger doors are closed. Disconnect LR door ajar switch connector. Using a test light connected to battery voltage, probe LR door ajar switch connector terminal No. 2, ground circuit. If test light illuminates, go to next step. If test light does not illuminate, repair open on wire.
5. Connect a jumper wire between LR door ajar switch connector, door ajar switch sense circuit and ground. Using scan tool, read PASS DOOR AJAR SW status. If scan tool displays PASS DOOR AJAR SW: CLOSED, replace LR door ajar switch. If scan tool does not display PASS DOOR AJAR SW: CLOSED, repair open on wire.
6. Open Right Rear (RR) door. Ensure all other passenger doors are closed. Disconnect RR door ajar switch connector. Using a test light connected to battery voltage, probe RR door ajar switch connector terminal No. 2, ground circuit. If test light illuminates, go to next step. If test light does not illuminate, repair open wire.
7. Connect a jumper wire between RR door ajar switch connector, door ajar switch sense circuit and ground. Using scan tool, read PASS DOOR AJAR SW status. If scan tool displays PASS DOOR AJAR SW: CLOSED, replace RR door ajar switch. If scan tool does not display PASS DOOR AJAR SW: CLOSED, repair open wire.
8. Turn ignition off. Disconnect RKE module connector. Using an ohmmeter, check resistance of passenger's door ajar switch sense circuit between each door ajar switch connector terminal No. 1 and RKE module connector terminal No. 7. (Scheme 9) If resistance is less than 5 ohms, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. If resistance is 5 ohms or more, repair open wire.

Parking Lights Fail To Flash During Alarm

1. Ensure parking lights are operating properly. Repair parking lights as necessary. If parking lights are operating properly, go to next step.
2. Turn ignition off. Disconnect 26-pin Remote Keyless Entry (RKE) module connector, located under center of instrument panel top cover. see scheme 4 Connect a 12-volt test light between RKE module connector terminal No. 2, headlight switch output circuit and ground. (Scheme 9) Turn parking lights on. If test light illuminates, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION. If test light does not illuminate, repair open wire. After making any repairs, perform «VTSS VERIFICATION TEST»(ref-151757-S33924630232003020300000) under VERIFICATION TESTS.

VTSS Fails To Arm/Disarm From Drivers Cylinder Lock Switch

Note. After making any repairs, perform VTSS VERIFICATION TEST under VERIFICATION TESTS.

1. Open driver's door and operate door locks from door lock switch. If door locks operate properly, go to next step. If door locks do not operate properly, perform «ALL LOCKS INOPERATIVE FROM A LOCK SWITCH»(ref-151757-S08482859462003020300000) test under POWER DOOR LOCKS/REMOTE KEYLESS ENTRY.
2. Disconnect driver's cylinder lock switch 2-pin connector. Using an ohmmeter, check resistance between driver's cylinder lock switch connector terminal No. 2, ground circuit and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
3. Using a voltmeter, check voltage between drivers cylinder lock switch connector terminal No. 1, driver's door switch multiplex circuit and ground. If voltage is about 5 volts, replace driver's cylinder lock switch. If voltage is 4.5 volts or less, repair open wire.

VTSS Fails To Arm/Disarm From Passengers Door Cylinder Lock Switch

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Open Right Front (RF) door and operate door locks from RF door lock switch. If door locks operate properly, go to next step. If door locks do not operate properly, perform «ALL LOCKS INOPERATIVE FROM A LOCK SWITCH»(ref-151757-S08482859462003020300000) test under POWER DOOR LOCKS/REMOTE KEYLESS ENTRY.
2. Disconnect RF lock cylinder switch 2-pin connector. Using an ohmmeter, check resistance between RF lock cylinder switch connector terminal No. 2, ground circuit and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open wire.
3. Using a voltmeter, check voltage between RF lock cylinder switch connector terminal No. 1, drivers door switch multiplex circuit and ground. If voltage is about 5 volts, replace RF cylinder lock switch. If voltage is 4.5 volts or less, repair open wire.

VTSS Indicator Fails To Flash

Note. After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

1. Ensure system is enabled before continuing. Turn ignition off. Disconnect 26-pin Remote Keyless Entry (RKE) module connector, located under center of instrument panel top cover. see scheme 4 Connect a jumper wire between RKE module connector terminal No. 17, Vehicle Theft Security System (VTSS) indicator driver circuit and ground. (Scheme 9) If VTSS indicator does not illuminate, go to next step. If VTSS indicator illuminates, replace RKE module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) under REMOVAL & INSTALLATION.
2. Disconnect 26-pin instrument cluster connector, located behind left upper instrument panel. Using an ohmmeter, check resistance of VTSS indicator circuit between RKE module connector terminal No. 17 and instrument cluster connector terminal No. 5. (Scheme 8) If resistance is less than 5 ohms, perform «ANY PCI BUS INDICATOR INOPERATIVE»(ref-151757-S10970420162003020300000) under INSTRUMENT CLUSTER. If resistance is 5 ohms or more, repair open wire.

VTSS Indicator Stays On Steady During Arming

Note. After making any repairs, perform VTSS VERIFICATION TEST under VERIFICATION TESTS.

1. If this vehicle is equipped with a hood ajar switch, go to the next step. If this vehicle is not equipped with a hood ajar switch, go to step 4 .
2. Ensure the hood is closed and aligned properly. With the DRBIII, read the hood ajar status. If the DRBIII shows OPEN, go to step 4 . If the DRBIII does not show OPEN, go to next step.
3. Disconnect the hood ajar switch connector. Disconnect the remote keyless entry module connector. Measure the resistance of the hood ajar switch sense circuit to ground. If the resistance is less than 1000 ohms, repair the hood ajar switch sense circuit for a short to ground. If the resistance is more than 1000 ohms, replace the hood ajar switch.
4. If vehicle is equipped with a decklid security switch, go to the next step. If this vehicle is not equipped with a decklid security switch, replace the remote keyless entry module.
5. With the DRBIII, read the VTSS decklid security switch state. If the DRBIII shows PRESENT, replace the remote keyless entry module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) . If the DRBIII does not show PRESENT, go to next step.
6. Disconnect the remote keyless entry module connector. Measure the resistance of the decklid security switch sense circuit to ground. If the resistance is less than 10.0 ohms, replace the remote keyless entry module. See «REMOTE KEYLESS ENTRY MODULE»(ref-151757-S32813867942003020300000) . If the resistance is more than 10.0 ohms, go to next step.
7. Disconnect the decklid security switch connector, located behind decklid lock cylinder. Using a 12-volt test light connected to 12-volts, probe the ground circuit. If the test light illuminates, go to next step. If the test light does not illuminate, repair the decklid security switch ground circuit for an open.
8. Turn the ignition off. Disconnect the remote keyless entry module connector. Disconnect the decklid security switch connector, located behind decklid lock cylinder. Connect a jumper wire between the decklid security switch sense circuit and ground. Measure the resistance between ground and the decklid security switch sense circuit in the RKE module connector. If the resistance is less than 5 ohms, replace the decklid security switch. If the resistance is more than 5 ohms, repair the decklid security switch sense circuit for an open.

VERIFICATION TESTS

Note. Ensure battery is fully charged before performing any test. For component locations, see COMPONENT LOCATIONS .

Note. If Powertrain Control Module (PCM) was replaced, the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into the PCM to prevent Diagnostic Trouble Codes (DTC) from being set in Anti-Lock Brake System (ABS) Controller Anti-Lock Brake (CAB) module and/or Occupant Restraint Controller (ORC). If replacing PCM on models equipped with a Smart Key Immobilizer Module (SKIM), secret key data must also be updated to enable engine starting. To program PCM, see POWERTRAIN CONTROL MODULE under PROGRAMMING.

Note. If Remote Keyless Entry (RKE) module is replaced, transmitter codes must be programmed into replacement module and RKE transmitters. See REMOTE KEYLESS ENTRY MODULE and REMOTE KEYLESS ENTRY TRANSMITTER under PROGRAMMING.

Note. If Sentry Key Immobilizer Module (SKIM) was replaced, SKIM and at least 2 sentry keys must be programmed. To program SKIM, see SENTRY KEY IMMOBILIZER MODULE under PROGRAMMING. To program sentry keys, see SENTRY KEYS under PROGRAMMING.