My toyota Caldina speedo is not working which has affected the OD OFF

You need a Service Manual not an Owner's Manual. It appears to be a foreign named Corolla. You need a Haynes or Chiltern Manual if you want a real book.

https://www.google.com/search?q=1994+Toyota+Caldina+service+manual

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The service and repair manual will give you all the knowledge with diagram and pictures to fix the the problem easily and you will get the manual from the given link https://toolsnyou.com

Toyota Caldina Service Repair Manual 2002 200

http://freecarservicemanuals.blogspot.com/2011/08/toyota-caldina-2002-2007-service-manual.html

low voltage
EFI car wont run well under 11 volts

check battery condition and alternator charge
might be its regulator

http://toyotamarket.ru/static/jp/B1/decoded_images/841475J.png
this is caldina fuse box diagram

this manual i found gives you for example t-5 then you look on manual for t-5 and it shows u where to do repair http://www.apexi.co.jp/pdf/products/rsm_wiring_e.pdf

run fault codes and check for TCM problem

thermostat may have been affected change it out to a 195..

Hi,

Code #42 on the 4Runner denotes a problem with the Vehicle Speed Sensor (VSS) circuit.

It means the ECM did not detect a signal from the VSS, above 2,200rpm....which might explain the speedo issue - Does your speedo play up, only when engine running above 2,200rpm or 2,700rpm?

Areas to check (in this order) are:

- Open (or short) in the VSS circuit
- faulty VSS sensor
- ECM fault within VSS circuit


Cheers,

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Hi there,
As you say the tacho/speedo come "back up to normal" after the incident, I assume that they either stop working or become erratic while the dash lights are misbehaving.
If so, this sounds like a dash wiring electrical problem.
The O/D OFF light is lit by the switch on the shifter (switch also inputs to the ECU). The ENGINE light is driven also from the ECU but the SLIP light is driven from the ABS/VSC computer, although these two computers do communicate.
Best plan of attack would be interrogate the ECU for error codes or ask a Toyota dealer to do so. At least you'll have some clue to any problems that the ECU's may have picked up.
Contact me about checking for ECU error codes if you want to attempt it yourself. Although the Caldina has an OBDC2 connector, as I understand it it's not 100% compliant, so you'll need a Toyota compatible reader. Fortunately teh codes are also output via the CHECK ENGINE light.
If there's no problems there, I'd be pulling the instrument cluster and checking for wiring problems. I'm not sure where in the world you are but most ex- JDM vehicles could have modified with timers, speed-cut or fuel-cut devices that either have been poorly installed or are playing up and causing electrical problems.