My 2001 chevrolet prizm automatic light control not working

STOP and PARK LPS will be tail lights.

ILLUM and GAUGES will.be dash lights.



STOP
Stop/CHMSL, Stoplamps

GAUGES
IP Cluster, DRL Relay, DRL Module, HDLP Switch, Keyless Entry Illumination, Low Coolant Module, CHIME Module, DRAB Module

PARK LPS
License Plate Lamp, Parking Lamps, Taillamps, Front Sidemarkers, Glove Box Ashtray

ILLUM
LP Cluster, HVAC Controls, RR HVAC Controls, IP Switches, Radio Illumination, Door Switch Illumination

Likely a bad ground, but could be a fuse(s), or a failed multifunction switch, or BCM. It requires circuit testing to identify the cause.

Headlamp Delay System - Autolamp, Aerostar and Explorer
The autolamp system provides light sensitive automatic on-off control of the exterior lamps normally controlled by the headlamp switch . The autolamp system keeps the lamps on for a preselected period of time after the ignition switch (11572) is turned off. The preselected time lapse can be adjusted by the operator up to three minutes.
On Aerostar, the system consists of a light sensor amplifier (13A018) , automatic headlamp dimmer relay (13A025) , and a time-delay headlamp dimmer sensor control (13C105) which includes an ON/OFF switch.
The Explorer consists of an ON/OFF switch, a light sensor and a time delay control which are part of the inside rear view mirror (17700) and two automatic headlamp dimmer relays .
Connections to the vehicle lamps parallel the connections to headlamp switch requiring the headlamp switch to be turned to the OFF position for the automatic control feature.
In normal operation, the system will turn the exterior lamps on when the natural outside light available to the light sensor amplifier decreases below a predetermined level, such as at sunset. Also, the lamps will automatically turn off when the level of outside light exceeds a predetermined level during daylight hours.
On Aerostar, the light sensor amplifier is mounted under a group of slots in the upper instrument panel in front of the driver. The light sensor amplifier must always be exposed to outside light to function properly. Do not place any items over the group of slots in the upper instrument panel which may block light to the light sensor amplifier.
On Explorer, the light sensor amplifier is on the back side of the interior rear view mirror. Do not place any items on the mirror that will block the sensor.
The headlamp dimmer sensor control thumbwheel is located next to the headlamp switch for Aerostar and on the interior rear view mirror for Explorer. The autolamp system is functional for automatic operation when the on-off control is moved from the OFF position. The closer the control is moved toward the max-delay, the longer the lamps will stay on after the ignition switch is turned off.
Pulling out the headlamp switch will override the autolamp. Automatic operation will not be possible until the headlamp switch is turned off.
Can you operate the headlamps manually, do they work ok? I don't like auto-lamps. Just my opinion.
I thought the above info might help?

7-BATT MAIN 1
60A
Fuses: •
CIGAR/DLC/APO FRT
• CLUSTER BATT
• CTSY LAMP
• ON STAR
• PWR LOCK
• PWR MIRROR
• RAP RELAY
• RR PWR SCKT

look below for above listed componet's , pull those fuse's one at a time till arc stop's ,then you found your problem circuit . Do you know where the I/P fuse box is ?
Fuse Block- I/P
Right side of the I/P, in the right front door opening


Fuse Block-I/P Label
Fuse Block-I/P Application Table Fuse/Circuit Breaker
Rating
Description
BCM PRGRM
10A
Body Control Module (BCM)
ENHANCED EVAP/AWD
15A
Evaporative Emission (EVAP) Canister Vent Solenoid, Clutch Pump Check Valve
CIGAR/DLC/APO FRT
20A
Auxiliary Power Outlet-Front, Cigar Lighter, Data Link Connector (DLC)
CLUSTER/BATT
10A
Instrument Panel Cluster (IPC)
CRUISE
10A
Cruise Control Module (CCM), Cruise Control Release Switch, Cruise Control ON/OFF Switch
CTSY LAMP
10A
Body Control Module (BCM)
DRL
10A
Daytime Running Lamps (DRL) Control Module
HVAC/DIC/DRL/HEATED SEAT
10A
Air Temperature Actuator-Left, Air Temperature Actuator-Right, Daytime Running Lamps (DRL) Control Module, Driver Information Center (DIC), Mode Actuator, Rear Window Wiper/Washer and Multifunction Switch (Heated Seat Switch), Recirculation Actuator, Relay Block (Rear Window Defogger Relay)
ELC/TRAILER
25A
Auto Level Control (ALC) Air Compressor, Auto Level Control (ALC) Air Inflator Relay, Auto Level Control (ALC) Sensor
FRT HVAC HI BLWR
30A
Blower Motor Resistor Assembly
FRT WPR/WSHR
25A
Windshield Wiper Motor, Windshield Wiper/Washer Switch
HAZARD
15A
Turn Signal/Multifunction Switch
HEADLAMP
20A
Daytime Running Lamps (DRL) Control Module, Headlamp Dimmer Switch, Headlamp Switch
HTD MIRROR
10A
Outside Rearview Mirrors-Left, Right
HVAC/BLOWER
25A
HVAC Control Module
IGN1
10A
Body Control Module (BCM), Instrument Panel Cluster (IPC), Left Rear Side Door Actuator Control Module, Rear Object Sensor Control Module, Right Rear Side Door Actuator Control Module, Stop Lamp Switch
LH HEADLP HIGH
10A
Headlamp High Beam-Left
LH HEADLP LOW
10A
Headlamp Low Beam-Left
LH T/LP
10A
Tail Lamp-Left, Trailer Rear Wiring Harness
MALL/CLUSTER
10A
Body Control Module (BCM), Instrument Panel Cluster (IPC)
ON STAR
5A
Vehicle Interface Unit (VIU)
PASS KEY
10A
Theft Deterrent Control Module
PCM/ABS
10A
Electronic Brake Control Module (EBCM), Fuse Block-Underhood, Powertrain Control Module (PCM), Park/Neutral Position (PNP) Switch
PCM/CRANK
10A
Powertrain Control Module (PCM)
PCM/PASS KEY/CLUSTER
10A
Instrument Panel Cluster (IPC), Powertrain Control Module (PCM), Theft Deterrent Control Module, Instrument Panel Cluster (IPC), Powertrain Control Module (PCM)
PWR LOCK
20A
Body Control Module (BCM)
PWR MIRROR
10A
Outside Rearview Mirror Switch
PWR QTR VENT
10A
Auto Level Control (ALC) Air Compressor, Auto Level Control (ALC) Sensor, Rear Quarter Window Switch
PWR/HEATED SEAT PSD
30A
Driver Seat Assembly, Passenger Seat Assembly
PWR SLDG DR
30A
Left Rear Side Door Actuator Control Module, Right Rear Side Door Actuator Control Module
PWR WDO
30A
Window Switch-Driver, Window Switch-Front Passenger
RAP RELAY
10A
Relay Block (RAP Relay)
RH HEADLP HIGH
10A
Headlamp High Beam-Right
RH HEADLP LOW
10A
Headlamp Low Beam-Right
RR HVAC/TEMP CONT
25A
Air Temperature Actuator-Auxiliary, Blower Motor-Auxiliary, Blower Motor Relay-Auxiliary, HVAC Control Assembly-Auxiliary, Mode Actuator-Auxiliary
RR DEFOG/ HTD MIRROR
30A
Window Defogger Relay-Rear
RR FOG LP
10A
Fog Lamp Relay-Rear
RR PWR SCKT
20A
Auxiliary Power Outlet-Rear
RH T/LP
10A
Tail Lamp-Right, Trailer Rear Wiring Harness
RR WPR/WSHR
20A
Window Wiper Motor-Rear, Rear Window Wiper/Washer and Multifunction Switch
SIR
15A
Inflatable Restraint Sensing and Diagnostic Module (SDM)
STOP LAMP
15A
Stop Lamp Switch
SWC BACKLIGHT
2A
Steering Wheel Controls-Left, Right
T/SIG
10A
Turn Signal Switch and Backup Lamp Relay

Back lighting or warning lights ? check engine , ABS , air bags , seat belt , oil light etc... ?
Interior Lamps Dimming
The second group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination and incandescent lamps.
• Power window switches
• HVAC control head assembly
• Radio
• The instrument panel cluster (IPC)
When the ignition switch is turned to the ON position, the vacuum fluorescent (VF) display (radio) turns on at maximum brightness. When the park lamps are ON all incandescent back lighting turn ON at the dimming level indicated by the IP dimmer switch. At the same time all vacuum fluorescent (VF) displays dim to match the indicated dimming level. When the headlamp switch is placed in the PARK position, the park lamp supply voltage circuit provides an input to the body control module (BCM). The BCM then supplies voltage to the instrument panel dimmer switch through the instrument panel dimming lamps control circuit. The setting of the instrument panel dimmer switch determines the amount of voltage that the instrument panel dimmer switch supplies to the BCM through the instrument panel dimming lamps low reference circuit. The BCM then sends a pulse width modulated (PWM) voltage to all the interior lamps. All the vacuum florescent (VF) and incandescent back lighting lamps are provided a specific voltage and are then grounded. When the headlight switch is turned to the PARK or HEADLAMP position, all incandescent back lighting turn on at the dimming level indicated by the IP dimmer switch. When the IP dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from Minimum intensity to maximum brightness in response to the IP dimmer switch.

I would have it checked for DTC'S - diagnostic trouble codes stored in the BCM !
DTC B2624 Display Dimming Input Range/Performance
The body control module (BCM) supplies voltage to the instrument panel dimmer switch through the instrument panel dimmer switch signal circuit. The dimmer switch varies the voltage and returns the new voltage to the BCM through the dimmer switch signal return circuit. The BCM uses this voltage to determine the illumination level of the instrument panel lamps.

DTC B2625 Display Dimming Pulse Width Modulation (PWM) Output Circuit Range/Performance
The body control module (BCM) receives a variable voltage from the instrument panel (I/P) lamp dimmer switch. The BCM uses this signal in order to vary the illumination level of the I/P lamps. The I/P dimming lamps output from the BCM is a pulse width modulated voltage supply used to light the I/P lamps. If a malfunction occurs in the I/P dimming lamps output circuit, this DTC is set.

DTC B2662 Park Lamp Switch Circuit Malfunction
The park lamps are controlled by the turn/headlamp switch. Positive battery voltage is supplied to the switch through the EXT LP fuse. When the turn/headlamp switch is placed in the park or head position, battery voltage is supplied to the park lamps. The body control module (BCM) is also connected to the park lamp circuit to sense whether or not the park lamps turn ON when the low beam or high beam headlamps are turned ON. The BCM also uses the parklamp battery positive voltage to power the instrument panel (I/P) dimmer output circuit. If the BCM senses that the low beam or high beam headlamps are ON and the park lamp input is not active, DTC B2662 sets.
Do the park lamps work ?

Park lamp fuse 20amp located in the under hood fuse box .DRL control module
Daytime Running Lamps (DRL) Control Module
Right of the steering column, behind the IP
Park, Sidemarker, Tail and License Lamps
Voltage is applied continuously to the PARK fuse to the headlamp and the instrument panel (IP) lamp dimmer switch through CKT 1340.
When the headlamp and the (IP) lamp dimmer switch is in the PARK or HEAD position, voltage is applied to CKT 9 thus activating the following lamps:
• The park lamps
• The side marker lamps
• The tail lamps
• The license lamps
The park/turn lamps are the only lamps that do not activate yet receive a current from CKT 9. The park/turn lamps do not activate because the voltage drop across the front side marker lamps is much higher than that across the turn lamp filaments Step
Action
Normal Result(s)
Abnormal Result(s)*

1
Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
The following lamps light:
• The license plate lamps
• The taillight lamps
• The front side marker lamps (Domestic)
• The front parking lamps (Domestic)
The headlamp position lamps (Export)
Refer to Park Lamps Inoperative
Park Lamps Inoperative
Step
Action
Value(s)
Yes
No

1
Inspect the PARK LP fuse.
Is the fuse open?
--
YES - Go to Step 2
NO - Go to Step 3

2
Repair a short to ground in CKT 1340.
Is the repair complete?
--
Go to Exterior Lights System Check
--

3
Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal R and ground.
Did the test lamp light?
--
Go to Step 7
Go to Step 4

4
Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal O and ground.
Did the test lamp light?
--
Go to Step 5
Go to Step 6

5
Replace the headlamp/IP lamp dimmer switch. Refer to Headlamp Switch Replacement .
Is the repair complete?
--
Go to Exterior Lights System Check
--

6
Repair the following conditions in CKT 1340 between the PARK LP fuse and the headlamp and the IP lamp dimmer switch harness connector terminal O:
• A faulty connection
• An open circuit
Is the repair complete?
--
Go to Exterior Lights System Check
--

7
Repair the following conditions in CKT 9 between the headlamp and the IP lamp dimmer switch harness connector terminal R and S204:
• A faulty connection
• An open circuit
Is the repair complete?
--
Go to Exterior Lights System Check

Both the headlight switch and the BCM provide a ground, or control circuit, to the headlight relay coil circuit for manual or automatic headlamp operation. When you place the headlamp switch in the OFF position, and the ambient light sensor indicates low light conditions, the BCM energizes the headlamp relay for low beam operation. You may switch the headlights to high beam by pulling the dimmer switch handle toward you until the dimmer switch is activated. When the dimmer switch is placed in the HIGH position, the indicator lamp input to the BCM is pulled low. The BCM then sends a class 2 message to the instrument cluster in order to illuminate the high beam indicator lamp.
Low and High Beams Headlamps Inoperative ?
Replace the headlamp switch. Refer to Headlamp Switch Replacement .
Did you check the headlamp relay ? Location ,left instrument panel
Did

Test the electrical circuit's ! Look at a wiring diagram so you know what wire's to test . Watch these video's , buy a DVOM - digital volt ohm meter . Learn to test so you don't listen to guesses .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
Electric Testing Techniques You Need to Know Free wiring diagrams here . http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size. Under system click on lighting ,then under subsystem click headlamps . Click the search button then the blue link's . Right away in the first diagram i see the headlamp / panel dimmer switch is a input to the BCM - body control module . I mite think your first response would be to want to replace the BCM ! Reading a discription of how the lights are suppose to work may shed some light on the problem .
Headlamp ON/OFF control is determined by the body control module (BCM) by a signal on the headlamp switch on input circuit when the headlamp switch is in the HEAD position. When the headlamp switch is in the AUTO position, the BCM determines headlamps ON/OFF by the voltage from the ambient light sensor.
If the headlight switch is left in the ON position, the inadvertent power control feature will turn off the headlights approximately 10 minutes after the ignition switch is turned to the OFF position. If the driver places the headlight switch in the ON position after the ignition switch has been turned OFF, or if the ignition switch is in the ACCY position, the headlights will remain on until turned off or the battery runs dead.
The high beam indicator is illuminated when the instrument cluster receives a class 2 serial data message from the BCM that the high beams are illuminated.

Having the vehicle checked for DTC'S - diagnostic trouble codes , BCM - codes ! Need a professional type scan tool . Part stores can't read body codes , dealer or independent repair shop .

DTC B2575
When the body control module (BCM) senses a request for low beam headlamp illumination, the BCM sends a ground signal to the low beam headlamp relay through the headlamp low beam relay control circuit. The headlamp low beam relay will apply voltage to illuminate the headlamps.
DTC B2580
When the body control module (BCM) receives a ground signal from the multifunction high beam or flash to pass (FTP) switch commanding to illuminate the high beam headlamps, the BCM will energize the high beam relay by grounding the high beam relay control circuit.
DTC B2600
DTC B2610
The body control module (BCM) receives a variable voltage signal from the instrument panel (I/P) dimmer switch requesting to illuminate the illumination lamps to a desired intensity. When this occurs, the BCM directly sends a variable voltage based on the I/P dimmer switch position on the instrument panel lamps dimming supply voltage circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuit.
Voltage for the instrument panel lamps dimming supply voltage circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuits is from the TBC 2 A fuse in the instrument panel fuse block directly through the BCM to these circuits.

DTC B2620
The BCM directly sends a 5 volt reference voltage to the I/P dimmer switch which is then adjusted based on the I/P dimmer switch position and returned as a dimming return and dimming input to the BCM. The BCM uses this signal to directly control the desired level of instrument panel illumination lamp intensity.

Your best bet , take it to a qualified repair shop .

I have the same problem few days ago, and still didn't find any solution. Can any one please help?????18

If i were you i wouldn't worry about the second relay too much .because there is only one , the DRL relay !Guessing never fix's automotive electrical problems ! Testing is the name of the game , with the aid of wiring diagrams an reading an understanding how the electrical circuits work . An learning how to diagnose correctly .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts

How to Use Multimeter to Troubleshoot Common Problems YouTube
The Trainer 29 Understanding How Electrical CIrcuits Work and How to Test...

The instrument cluster controls the headlamp systems that include daytime running lamps (DRL). The system allows the headlamps to operate at a reduced intensity when all of the following conditions apply:
• The engine is running.
• The transaxle is not in the PARK position.
• The normal headlamps are not on.
The instrument cluster turns the DRL system on by grounding CKT 592, thereby energizing the DRL relay. This action allows a reduced voltage of 6 volts to flow across the headlamps. If the vehicle has the optional fog lamps, the fog lamp relay will also be energized. The park lamps will turn on and the fog lamps will operate normally. When the headlamp switch is turned to the ON position, the instrument cluster allows normal headlamp operation.
The instrument cluster also has an input from the park brake. If the park brake is in the ON position, the DRL will remain disabled until the park brake is placed in the OFF position. On vehicles with an automatic transaxle, the instrument cluster will disable the DRL until the transaxle has been taken out of the PARK position.
Headlamps
A rocker type switch is located on the left side of the instrument panel (IP). The rocker type switch controls the headlamps. One switch position turns on the following lamps:
• The parking lamps
• The side marker lamps
• The taillamps
• The license plate lamp
• The IP lamps
• The interior lamps
The second switch position turns on the headlamps in addition to all of the above lamps.
An IP lamp dimmer control is provided in order to vary the intensity of the IP lamps. Turn the control past the full bright detent in order to turn on the courtesy lamps.
The under hood lamp is designed to turn on under the following conditions:
• When the hood is raised
• When the parking or headlamp switch is on

You probably have a open circuit in the wiring for the passanger high beam .

Your best bet would be to have a qualified repair shop check it out . May have a broken wire somewhere in the wiring harness .