Inoperative tail lights and instrument panel lights

Clean plugs and bulb sockets and spray with DW 40 or similar. (dry connection). Otherwise there is faulty wire/s.

are the bulbs good ? Do the tail light's , park light's work ? These light's all come on when you turn the headlamp switch on to park lamps or headlamps .

Turn ON the park lamps.
Observe the license lamps.
Do the license lamps operate properly? Yes - No
No ? Go to Step 3
Do the park lamps operate properly? Yes - No
Yes - Go to Step 4

Remove the inoperative license lamp bulb.
Connect a test lamp between the instrument panel lamp fuse supply voltage 1 circuit of the inoperative license lamp bulb and the ground circuit of the inoperative license lamp bulb.
Turn ON the ignition, with the engine OFF.
Turn ON the park lamps.
Did the test lamp illuminate?

DIMMING FUSE 10 amp - located in the under hood fuse box .

#1: Panel Illumination
#2: Guages,Right High beam headlight and the high beam indicator
#3: Rear Wiper, Left headlight High Beam
#4: RH park, backup lights switch and relay,Speed porpotional steering module,power door lock switch illumination and daytime running lights(Canada)
#5: Power Door locks,Power Mirrors,vanity,dome,map,ignition and trunk lights,sunroof,radio,power antenna,body control module and power for the data link connector
#6:Heated mirrors,heated rear window indicator
#7: Instrument cluster illumination,park and tail lights
#8: Cigarette lighter,Radio Amp and horns
#9: Power door lock motors
#10: Not used
#11: Radio
#12:Left low beam head light
#13,14,15,16 not used

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

they are dual filament bulbs so the tail light filament might have blown and not the stop light , replace the bulb to check

Hello. I know youprobably allready have the answer. I a just posting here for future use.


There is a relay to the left of the clutch on my 1996 Hilux. This was causing a similar problem for me. It is found on the left side, iside the car, left of the clutch pedal.

Could be one of three things;
1. Check the fuses in the fuse box.
2. If all fuses are OK, check the headlight switch.
3. If this car has 'delay turn off lights' feature, the lighting control module should be checked.

I have same problem. Fuses keep blowing in 1 to 2 days, which affect all interior & instrument cluster, parking/tail/turn signal, Lights which was 4 fuses. Good Luck & def. check fuses (3 locations)

I had this same symptom after I pulled a trailer that had light "issues". I tried wiggling the trailer light connector around until the trailer lights begin working. Next think I know they were not working again and now my left tail light was out. I thought it odd that is wasn't both lights out being on the same fuse, but checked wiring etc with no problems found. Mine turned out to be the "left tail light fuse" in the engine compartment fuse box. All of the parking and tail lights as independently fuse, You can tell which one it is by the guide on the fuse box lid. You will be looking for a 10 amp (red) fuse near the center of the fuse box.

rgant