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B1503 Engine Diagnostic Code For Toyota Hiace

Sample B1503 Engine

B1503 engine code for Toyota Hiace provides below are generic codes that may not apply to all vehicles. Toyota Hiace manufacturer uses specific Toyota Hiace diagnostic code that are different from the codes shown below. Foreign vehicles may also use DTC codes different from the generic DTC codes.

A good ground connection is also extremely important. B1503 engine problem because the presence of voltage at the panel harness won't make the panel work if there is a bad ground connection. Since the instrument cluster is mounted in a plastic dash, a separate ground wire or ground circuit through the wiring harness is usually needed to complete the power circuit. Refer again to the wiring diagram to find the ground path, and then check it with your ohmmeter. Do not use a self-powered test light because it cannot measure resistance (any resistance will lower circuit voltage).

B1503 Diagnostic Trouble Code For Toyota Hiace Meaning

B 1 5 03
Body Problem MFG - Manufacturer Specific Vehicle Speed Control And Idle Control System 03 Engine Fault Code
Toyota Hiace Car Engine How to fix B1503 engine diagnostic code For Toyota Hiace ?

Starting letter B diagnostic code shows that there are problems in antilock brake system, electronic suspension and steering systems.
If your "Check Engine Light" is on, it means your vehicle has one or more OBD II Trouble Codes so you have to check your engine diagnostic code tool.

If your vehicle is an older model with a non-electronic Vehicle Speed Control And Idle Control System, you can check the distributor cap to see whether the spark is getting from there to the coil and on to the spark plugs.


Don't forget ! If your B1503 engine code not resolved on and there are trouble codes in your computer, your vehicle will not pass an OBD 2 emissions test. The light must be off and there must be no codes in memory to pass an OBD 2 emissions test. In addition, all of the OBD II self-monitors that check for faults must have run and completed without finding any further problems to pass the test.