ON-BOARD DIAGNOSTIC SYSTEM MALFUNCTION DETECTION FUNCTION [TCM (SJ6A-EL)]

id0502o1280100

Purpose/Function

Construction/Operation

DTC table

DTC separate detection condition

DTC No.	Description	Detection condition
P0601:00	TCM: ROM check sum error	•  Vehicle condition: Under any condition •  Status: Detects internal flash ROM malfunction •  Period: Confirmed 1 time
P0603:00	TCM: EEPRPM check sum error	•  Vehicle condition: Under any condition •  Status: TCM detects different numeric values for EEPROM and RAM •  Period: Confirmed 1 time
P0604:00	TCM: RAM access error	•  Vehicle condition: Under any condition •  Status: Detects RAM read/write malfunction •  Period: Confirmed 1 time
P0707:00	TR switch: Short circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects TR switch multiple input •  Period: Confirmed 5 times in 2 s or more
P0708:00	TR switch: Open circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects no output of TR switch at vehicle speed of 30 km/h {19 mph} or higher •  Period: Confirmed 1 time in 30 s or more
P0711:00	TFT sensor: Sensor malfunction	•  Vehicle condition: While driving in D or R position with engine rotating •  Status: Detects no change in ATF temperature •  Period: Confirmed 1 time continuously for 10 min or more
P0712:00	TFT sensor: Short to ground	•  Vehicle condition: TCM communication normal while engine rotates in warm-up condition •  Status: Detects ATF temperature of 200 °C {392 °F} or more •  Period: Confirmed 6 times in 10 s or more
P0713:00	TFT sensor: Open circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects ATF temperature of less than –43 °C {–45.4 °F} •  Period: Confirmed 12 times in 1 s or more
P0717:00	Turbine sensor: No signal input	•  Vehicle condition: TCM normal during engine rotation •  Status: Turbine sensor signal not input during VSS 12-pulse detection •  Period: Confirmed 500 times
P0722:00	VSS: No signal input	•  Vehicle condition: TCM normal during engine rotation •  Status: VSS signal not input during turbine sensor 12-pulse detection •  Period: Confirmed 500 times
P0751:00	Shift solenoid A: Stuck off	•  Vehicle condition: Shift solenoid A signal is output while the TCM is normal with engine running •  Status: Detects that shift solenoid A does not change from off •  Period: Confirmed 1 time
P0752:00	Shift solenoid A/shift solenoid D: Stuck on	•  Vehicle condition: Shift solenoid A or D signal is output while the TCM is normal with engine running. •  Status: Detects that shift solenoid A or D does not change from on. •  Period: Confirmed 2 times
P0756:00	Shift solenoid B: Stuck off	•  Vehicle condition: Shift solenoid B signal is output while the TCM is normal with engine running •  Status: Detects that shift solenoid B does not change from off •  Period: Confirmed 1 time
P0757:00	Shift solenoid B: Stuck on	•  Vehicle condition: Shift solenoid B signal is output while the TCM is normal with engine running •  Status: Detects that shift solenoid B does not change from on •  Period: Confirmed 1 time
P0761:00	Shift solenoid C: Stuck off	•  Vehicle condition: Shift solenoid C signal is output while the TCM is normal with engine running •  Status: Detects that shift solenoid C does not change from off •  Period: Confirmed 1 time
P0762:00	Shift solenoid C: Stuck on	•  Vehicle condition: Shift solenoid C signal is output while the TCM is normal with engine running •  Status: Detects that shift solenoid C does not change from on •  Period: Confirmed 1 time
P0766:00	Shift solenoid D: Stuck off	Shift solenoid D malfunction •  Vehicle condition: Shift solenoid D signal is output while the TCM is normal with engine running •  Status: Detects that shift solenoid D does not change from off •  Period: Confirmed 1 time
	Shift solenoid G: Stuck on	Shift solenoid G malfunction •  Vehicle condition: Shift solenoid G signal is output while the TCM is normal with engine running •  Status: Detects that shift solenoid G does not change from on •  Period: Confirmed 1 time
P0781:00	1-2 shift valve	•  Vehicle condition: During shifting from 3GR to 4GR •  Status: Detects that 1-2 shift valve does not move •  Period: Confirmed 1 time
P0813:00	Reverse sequence valve	•  Vehicle condition: During shifting from 4GR to 5GR •  Status: Detects that reverse sequence valve does not move •  Period: Confirmed 1 time
P0819:00	M position switch up or down switch signal: Signal error	M position switch signal error •  Vehicle condition: TCM communication normal during engine rotation •  Status: Detects that M position switch is on in P, R or N position •  Period: Confirmed continuously for 2 s Up switch malfunction or down switch signal error •  Vehicle condition: TCM communication normal during engine rotation •  Status: Detects that up or down switch is on while M position switch is off •  Period: Confirmed continuously for 10 s
P0882:00	Power supply voltage: Low input	•  Vehicle condition: TCM communication normal while engine is idling •  Status: Detects terminal B+ current of 9.05 V or less •  Period: Confirmed 20 times continuously for 1 s or more
P0961:00	Line pressure control solenoid signal: Solenoid stuck	•  Vehicle condition: TCM communication normal during engine rotation •  Status: Detects that feedback current value is incorrect relative to electrical current command value of line pressure control solenoid •  Period: Confirmed 2 times continuously
P0962:00	Line pressure control solenoid signal: Open/short circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects open circuit or short to ground in line pressure control solenoid signal system •  Period: Confirmed 5 times in 0.1 s or more
P0963:00	Line pressure control solenoid signal: Short circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects open circuit or short to ground in line pressure control solenoid signal system •  Period: Confirmed 5 times in 0.1 s or more
P0969:00	Shift solenoid F: Solenoid stuck	•  Vehicle condition: TCM communication normal during engine rotation •  Status: Detects that feedback current value is incorrect relative to electrical current command value of shift solenoid F •  Period: Confirmed 2 times continuously
P0970:00	Shift solenoid F signal: Open/short circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects open circuit or short to ground in shift solenoid F signal system •  Period: Confirmed 5 times in 0.1 s or more
P0971:00	Shift solenoid F signal: Short circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects short to power supply in shift solenoid F signal system •  Period: Confirmed 5 times in 0.1 s or more
P0973:00	Shift solenoid A signal: Short circuit	•  Vehicle condition: Shift solenoid A ON signal is output while TCM is normal with engine running •  Status: Detects short to ground in shift solenoid A signal system •  Period: Confirmed 1 time in 0.5 s or more
P0974:00	Shift solenoid A signal: Open/short circuit	•  Vehicle condition: Shift solenoid A OFF signal is output while TCM is normal with engine running •  Status: Detects open circuit or short to power supply in shift solenoid A signal system •  Period: Confirmed 1 time in 0.5 s or more
P0976:00	Shift solenoid B signal: Short circuit	•  Vehicle condition: Shift solenoid B ON signal is output while TCM is normal with engine running •  Status: Detects short to ground in shift solenoid B signal system •  Period: Confirmed 1 time in 0.5 s or more
P0977:00	Shift solenoid B signal: Open/short circuit	•  Vehicle condition: Shift solenoid B OFF signal is output while TCM is normal with engine running •  Status: Detects open circuit or short to power supply in shift solenoid B signal system •  Period: Confirmed 1 time in 0.5 s or more
P0979:00	Shift solenoid C signal: Short circuit	•  Vehicle condition: Shift solenoid C ON signal is output while TCM is normal with engine running •  Status: Detects short to ground in shift solenoid C signal system •  Period: Confirmed 1 time in 0.5 s or more
P0980:00	Shift solenoid C signal: Open/short circuit	•  Vehicle condition: Shift solenoid C OFF signal is output while TCM is normal with engine running •  Status: Detects open circuit or short to power supply in shift solenoid C signal system •  Period: Confirmed 1 time in 0.5 s or more
P0982:00	Shift solenoid D signal: Short circuit	•  Vehicle condition: Shift solenoid D ON signal is output while TCM is normal with engine running •  Status: Detects short to ground in shift solenoid D signal system •  Period: Confirmed 1 time in 0.5 s or more
P0983:00	Shift solenoid D signal: Open/short circuit	•  Vehicle condition: Shift solenoid D OFF signal is output while TCM is normal with engine running •  Status: Detects open circuit or short to power supply in shift solenoid D signal system •  Period: Confirmed 1 time in 0.5 s or more
P0985:00	Shift solenoid E signal: Short circuit	•  Vehicle condition: Shift solenoid E ON signal is output while TCM is normal with engine running •  Status: Detects short to ground in shift solenoid E signal system •  Period: Confirmed 1 time in 0.5 s or more
P0986:00	Shift solenoid E signal: Open/short circuit	•  Vehicle condition: Shift solenoid E OFF signal is output while TCM is normal with engine running •  Status: Detects open circuit or short to power supply in shift solenoid E signal system •  Period: Confirmed 1 time in 0.5 s or more
P0B0B:00	Electric AT oil pump: Electric AT oil pump driver relay ON stuck	•  Vehicle condition: While ignition is switched OFF •  Status: Detected electric AT oil pump driver relay ON stuck •  Period: Confirmed 5 times continuously in 0.1 s or more
P0C1D:00	Electric AT oil pump: ATF high temperature detected for electric AT oil pump control	•  Vehicle condition: Constantly •  Status: ATF temperature 110°C {230 °F} or more detected •  Period: Confirmed 1 time in 1 s or more
P0C29:00	Electric AT oil pump: Electric AT oil pump driver control unit input frequency malfunction	•  Vehicle condition: Constantly •  Status: Electric AT oil pump driver control unit detects internal malfunction •  Period: Confirmed 5 times continuously in 0.1 s or more
P0C2A:00	Electric AT oil pump: Electric AT oil pump driver control unit lock/spin malfunction	•  Vehicle condition: During i-stop •  Status: Electric AT oil pump driver control unit detects internal malfunction •  Period: Confirmed 2 times continuously in 0.5 s or more (only 1 time detected during i-stop for 1 time)
P0C2B:00	Electric AT oil pump: Electric AT oil pump driver control unit A/D malfunction	•  Vehicle condition: During i-stop •  Status: Electric AT oil pump driver control unit detects internal malfunction •  Period: Confirmed 2 times continuously in 0.5 s or more (only 1 time detected during i-stop for 1 time)
P0C2C:00	Electric AT oil pump: Electric AT oil pump driver control unit period malfunction	•  Vehicle condition: Constantly •  Status: Electric AT oil pump driver control unit detects internal malfunction •  Period: Confirmed 5 times continuously in 0.1 s or more
P0C2D:00	Electric AT oil pump: Electric AT oil pump driver control unit Lo stuck	•  Vehicle condition: Constantly •  Status: Electric AT oil pump driver control unit detects internal malfunction •  Period: Confirmed 5 times continuously in 0.1 s or more
P0C2E:00	Electric AT oil pump: Electric AT oil pump driver control unit High stuck	•  Vehicle condition: Constantly •  Status: Electric AT oil pump driver control unit detects internal malfunction •  Period: Confirmed 5 times continuously in 0.1 s or more
P2719:00	Shift solenoid G: Solenoid stuck	•  Vehicle condition: TCM communication normal during engine rotation •  Status: Detects that feedback current value is incorrect relative to electrical current command value of shift solenoid G •  Period: Confirmed 2 times continuously
P2720:00	Shift solenoid G signal: Open/short circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects open circuit or short to ground in shift solenoid G signal system •  Period: Confirmed 5 times in 0.1 s or more
P2721:00	Shift solenoid G signal: Short circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects short to power supply in shift solenoid G signal system •  Period: Confirmed 5 times in 0.1 s or more
P2757:00	TCC: Stuck off	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects that TCC control solenoid does not change from off •  Period: Confirmed 1 time in 2 s or more
P2758:00	TCC: Stuck on	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects that TCC control solenoid does not change from on •  Period: Confirmed 2 times in 1.8 s or more
P2762:00	TCC control solenoid signal: Solenoid stuck	•  Vehicle condition: TCM communication normal during engine rotation •  Status: Detects that feedback current value is incorrect relative to electrical current command value of TCC control solenoid •  Period: Confirmed 2 times continuously
P2763:00	TCC control solenoid signal: Short circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects short to power supply in TCC control solenoid signal system •  Period: Confirmed 5 times in 0.1 s or more
P2764:00	TCC control solenoid signal: Open/short circuit	•  Vehicle condition: TCM normal during engine rotation •  Status: Detects open circuit or short to ground in pressure control solenoid signal system •  Period: Confirmed 5 times in 0.1 s or more
P2797:00	Electric AT oil pump: Malfunction in electric AT oil pump function	•  Vehicle condition: Returned to normal control from i-stop control •  Status: Detected signal error •  Period: Confirmed 5 times
U0073:00	CAN communication: Module communication error	•  Vehicle condition: TCM communication normal •  Status: Detects CAN BUS OFF malfunction •  Period: After CAN controller reset, confirmed by re-detection
U0074:00	CAN communication: Module communication error (local CAN between TCM and PCM)	•  Vehicle condition: TCM communication normal •  Status: Detects CAN BUS OFF malfunction •  Period: After CAN controller reset, confirmed by re-detection
U0100:00	CAN communication: Communication error between PCM	•  Vehicle condition: TCM communication normal •  Status: Detects communication error with PCM •  Period: Detects communication time-out
U0115:00	CAN communication: Communication error between PCM (local CAN between TCM and PCM)	•  Vehicle condition: TCM communication normal •  Status: Detects communication error with PCM •  Period: Detects communication time-out
U0121:00	CAN communication: Communication error between DSC HU/CM	•  Vehicle condition: TCM communication normal •  Status: Detects communication error with DSC HU/CM •  Period: Confirmed 1 time in 0.5 s or more, or 2 s or more
U0131:00	CAN communication: Communication error between EPS control module	•  Vehicle condition: TCM communication normal •  Status: Detects communication error with EPS control module •  Period: Confirmed 1 time in 0.5 s or more
U0155:00	CAN communication: Communication error between instrument cluster	•  Vehicle condition: TCM communication normal •  Status: Detects communication error with instrument cluster •  Period: Confirmed 1 time in 2 s or more
U0214:00	CAN communication: Communication error between start stop unit	•  Vehicle condition: TCM communication normal •  Status: Detects communication error with start stop unit •  Period: Confirmed 1 time in 2 s or more
U0442:00	CAN communication: Error signal received from PCM	•  Throttle opening signal error ―  Vehicle condition: TCM communication normal ―  Status: Detects throttle opening angle signal error ―  Period: Confirmed 1 time in 0.5 s or more •  Accelerator opening angle signal error ―  Vehicle condition: TCM communication normal ―  Status: Detects accelerator opening angle signal error ―  Period: Confirmed 1 time in 0.5 s or more •  Engine torque signal error ―  Vehicle condition: TCM communication normal ―  Status: Detects engine torque signal error ―  Period: Confirmed 1 time in 0.5 s or more •  Engine speed signal error ―  Vehicle condition: TCM communication normal ―  Status: Detects engine speed signal error ―  Period: Confirmed 1 time in 0.5 s or more •  Engine coolant temperature signal error ―  Vehicle condition: TCM communication normal ―  Status: Detects engine coolant signal error ―  Period: Confirmed 1 time in 0.5 s or more •  Detects engine misfire ―  Vehicle condition: TCM communication normal ―  Status: Detects engine misfire determination signal ―  Period: Confirmed 1 time

Drive cycle

•  The drive cycle is the period of time from when the engine is started to the next time the engine is started.

•  One drive cycle, as shown in the figure, indicates the period from the time engine is started to the next time the engine is started. If this period is repeated twice it then becomes two drive cycles.

am3uun00002080

•  To detect DTCs, a required number of drive cycles for pre-detection has been set. For the number of drive cycles required for detection, refer to the DTC table.

Pending code

•  The pending code is temporary malfunction code which differs from DTCs which are recorded when the TCM detects a transmission malfunction.

•  DTCs are recorded in the TCM according to the number of drive cycles when the TCM detects a transmission malfunction. At the same time, pending code is recorded in the TCM regardless of the number of drive cycles.

•  Pending code recorded in the TCM is erased from the TCM, from the next drive cycle, when the TCM determines that the transmission is normal.

Status byte for DTC

•  The status byte is the two-digit code (two digits after hyphen (-)) after the DTC.

am5uun00000323

•  The status byte is a code which indicates the pending code, current/past malfunction status, or warning illumination status.

•  The status byte can be read by performing a CMDTC self test using the Mazda Modular Diagnostic System (M-MDS).

•  For details on the status byte, refer to the explanation on the Mazda Modular Diagnostic System (M-MDS) when reading the DTC.

Self test function

•  When the self test is implemented, the TCM performs diagnosis of the transmission control system. If a malfunction is detected with the results of the diagnosis, an applicable DTC is recorded. A recorded DTC can be read by the Mazda Modular Diagnostic System (M-MDS).

•  By implementing the self test function, verification of the current malfunction and verification after repair is facilitated.

CMDTC (Continuous Memory Diagnostic Trouble Code) self test

•  The CMDTC self test is a function which reads all DTCs recorded in the TCM after the previous DTCs are erased no matter whether they are past malfunctions or current malfunctions.

KOEO (Key On Engine Off) self test

•  The KOEO self test can perform malfunction diagnosis of DTCs corresponding to this self test function when the ignition is switched ON and the engine is stopped. This self test implements based on the test implementation command signal sent to the TCM from the Mazda Modular Diagnostic System (M-MDS).

Snapshot data

•  The data for all DTCs currently detected is stored.

Recorded DTC timing

―  For DTCs with one drive cycle, data is recorded during the malfunction determination period.

―  For DTCs with two drive cycles, data is recorded during non-determination (1st diagnosis) periods.

Snapshot data item table