Mazda Specific Codes

Useful Diagnostic Procedures

Pin1 - GMCAN (low speed, Single -wire)

Pin 3 - Discretionary

Pin 1 - GM CAN (Low speed, single wire)
Pin 2 - SAE J1850-VPW Positive
Pin 3 - Discretionary*
Pin 4 - Chassis Ground
Pin 5 - Signal Ground
Pin 6 - ISO 15765-4 CAN high
Pin 7 - ISO 9141-2 & ISO 14230-4 K-Line
Pin 8 - Discretionary*
Pin 9 - GM ALDL (OBD-I 8192 bps)
Pin 10 -  SAE J1850-VPW
Pin 11 - Discretionary*
Pin 12 - Discretionary*
Pin 13 - Discretionary
Pin 14 - ISO 15765-4 CAN Low
Pin 15 - ISO 9141-2 & ISO 14230-4 Line
Pin 16 - Unswitched Battery Power

Female OBDII Socket in Car

fig.  Examples of OBDII Testers

Prices around £34+

Prices around £12-15

Workshop
Diagnostic Procedures

Diagnostic Pages

D1

D2

D1a

D3

D3

D4

Page DP-3-3

Mazda XR 8 evolve Workshop

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P1772 Throttle Position Sensor Circuit Shorted to Transmission Control Module
P1780 Transmission Control Switch Circuit
P1780 Overdrive Off Switch not Cycled during the Self Test
P1781 Transmission 4x4 Low Switch out of Range Fault
P1783 Transmission Fluid Temperature High Input
P1788 3-2T/CCS Circuit Open
P1789 3-2T/CCS Circuit Shorted
P1794 Powertrain Control Module Battery Direct Power Circuit
P1797 P/N Switch Open or Short Circuit
P1900 Turbine Speed Sensor Circuit Intermittent
P1901 Torque Converter Clutch Circuit Intermitte