2002 MAZDA 6 light

ON-BOARD DIAGNOSTIC
K2–123
K2
FOREWORDA6E577018901201•When the customer reports vehicle malfunction, check the malfunction indicator lamp (MIL) indication, AT
warning indication, and diagnostic trouble code (DTC), then diagnose the malfunction according to following
flowchart.
—If the DTC exists, diagnose the applicable DTC inspection. (See K2–126 DTC TABLE.)
—If the DTC does not exist, the MIL and AT warning light does not illuminate, diagnose the applicable
symptom troubleshooting. (See K2–183 AUTOMATIC TRANSAXLE SYMPTOM TROUBLESHOOTING.)
*:Malfunction Indicator lamp (MIL), AT warning light
End Of Sie
AUTOMATIC TRANSAXLE ON-BOARD DIAGNOSTIC FUNCTIONA6E577018901202DTC Reading Procedure
1. Perform the necessary vehicle preparation and visual inspection.
2. Connect SST (WDS or equivalent) to the vehicle
DLC-2 16-pin connector located the left side of
the center console.
3. Retrieve DTCs by SST (WDS or equivalent).
End Of Sie
ON-BOARD DIAGNOSTIC
YMU102WBX
DLC-2
A6E3970W002

K2–126
ON-BOARD DIAGNOSTIC
DTC TABLEA6E577018901204
* : Indicates the applicable item in On-Board System Readiness Test defined by CARB.
End Of Sie
DTC No. Condition MILAT
warning
lightDC*Monitor
itemMemory
functionPage
P0705Transaxle range (TR) switch circuit malfunction
(power short circuit)XX2CCM X(See K2–127
DTC P0705)
P0706Transaxle range (TR) switch circuit malfunction
(Open/ground short circuit)XX2CCM X(See K2–129
DTC P0706)
P0711Transaxle fluid temperature (TFT) sensor
malfunction (Stuck)XNO2CCM X(See K2–132
DTC P0711)
P0712Transaxle fluid temperature (TFT) sensor circuit
malfunction (short circuit)XX2CCM X(See K2–133
DTC P0712)
P0713Transaxle fluid temperature (TFT) sensor circuit
malfunction (open circuit)XX2CCM X(See K2–135
DTC P0713)
P0715 Input/turbine speed sensor circuit malfunction X X 2 CCM X(See K2–137
DTC P0715)
P0720Vehicle speedometer sensor (VSS) circuit
malfunctionXX2CCM X(See K2–139
DTC P0720)
P0740Torque converter clutch (TCC) system
malfunctionX–2CCM X(See K2–142
DTC P0740)
P0743Torque converter clutch (TCC) solenoid valve
circuit malfunctionXX1CCM X(See K2–144
DTC P0743)
P0748 Pressure control solenoid circuit malfunction–X–CCM X(See K2–146
DTC P0748)
P0751 Shift solenoid A malfunction (stuck off) X–2CCM X(See K2–149
DTC P0751)
P0752 Shift solenoid A malfunction (stuck on) X–2CCM X(See K2–150
DTC P0752)
P0753 Shift solenoid A circuit malfunction (open/short) X X 1 CCM X(See K2–151
DTC P0753)
P0756 Shift solenoid B malfunction (stuck off) X–2CCM X(See K2–153
DTC P0756)
P0757 Shift solenoid B malfunction (stuck on) X–2CCM X(See K2–154
DTC P0757)
P0758 Shift solenoid B circuit malfunction (open/short) X X 1 CCM X(See K2–155
DTC P0758)
P0761 Shift solenoid C malfunction (stuck off) X–2CCM X(See K2–158
DTC P0761)
P0762 Shift solenoid C malfunction (stuck on) X–2CCM X(See K2–159
DTC P0762)
P0763 Shift solenoid C circuit malfunction (open/short) X X 1 CCM X(See K2–160
DTC P0763)
P0768Reduction timing solenoid valve circuit
malfunction (open/short)–X–CCM X(See K2–163
DTC P0768)
P0773Neutral shift solenoid valve circuit malfunction
(open/short)–X–CCM X(See K2–166
DTC P0773)
P07782-4 brake solenoid valve circuit malfunction
(open/short)–X–CCM X(See K2–169
DTC P0778)
P0791Intermediate sensor circuit malfunction (open/
short)XX2CCM X(See K2–172
DTC P0791)
P0798High clutch solenoid valve circuit malfunction
(open/short)–X–CCM X(See K2–175
DTC P0798)
P1710 GND return circuit malfunction–––Other X(See K2–178
DTC P1710)
U0073 CAN BUS OFF (See T–41 DTC TABLE)
U0100 TCM cannot receive any signals from PCM (See T–41 DTC TABLE)

ON-BOARD DIAGNOSTIC
K2–127
K2
DTC P0705A6E577018901205
Diagnostic procedure
DTC P0705 Transaxle range (TR) switch circuit malfunction (short circuit)
DETECTION
CONDITION•Two or more range signals are input from TR switch for 5 seconds or more.
Diagnostic support note:
•This is a continuous monitor (CCM).
•MIL illuminates if TCM detects the above malfunction conditions in two consecutive drive cycles.
•PENDING CODE is available above malfunction condition during first drive cycle.
•FREEZE FRAME DATA is available.
•AT warning light indication.
•DTC is stored in TCM memory.
POSSIBLE
CAUSE•TCM malfunction.
•Short to power between TR switch terminal A and TCM terminal 2B
•Short to power between TR switch terminal E and TCM terminal 1W
•Short to power between TR switch terminal D and TCM terminal 1T
•Short to power between TR switch terminal G and TCM terminal 1Z
•Damaged connector between TR switch and TCM
•TR switch malfunction
STEP INSPECTION ACTION
1VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
•Has FREEZE FRAME PID DATA been
recorded?Yes Go to next step.
No Record FREEZE FRAME PID DATA on repair order, then
go to next step.
2VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
•Check for related Service Bulletins and/or on-
line repair information availability.
•Is any related repair information available?Yes Perform repair or diagnosis according to available repair
information.
•If vehicle is not repaired, go to next step.
No Go to next step.
TR SWITCHTCM
TR SWITCH
HARNES SIDE CONNECTOR
TCM HARNES SIDE CONNECTOR IG SWITCHP
A
C
2B
1W
1T
1Z
E
D
G R
N
D

ON-BOARD DIAGNOSTIC
K2–129
K2
DTC P0706A6E577018901206
Diagnostic procedure
DTC P0706 Transaxle range (TR) switch circuit malfunction (open/ground short circuit)
DETECTION
CONDITION•No range signal is input from TR switch for 100 seconds or more.
Diagnostic support note:
•This is a continuous monitor (CCM).
•MIL illuminates if TCM detects the above malfunction conditions in two consecutive drive cycles.
•PENDING CODE is available.
•FREEZE FRAME DATA is available.
•AT warning light indication.
•DTC is stored in TCM memory.
POSSIBLE
CAUSE•TR switch malfunction.
•TR switch misadjustment
•Short to ground between TR switch terminal A and TCM terminal 2B
•Short to ground between TR switch terminal E and TCM terminal 1W
•Short to ground between TR switch terminal D and TCM terminal 1T
•Short to ground between TR switch terminal G and TCM terminal 1Z
•Open circuit between TR switch terminal A and TCM terminal 2B
•Open circuit between TR switch terminal E and TCM terminal 1W
•Open circuit between TR switch terminal D and TCM terminal 1T
•Open circuit between TR switch terminal G and TCM terminal 1Z
•Open circuit between TR switch terminal C and IG key (ACC)
•Short to ground between TR switch terminal C and IG key (ACC)
•Damaged connector between TR switch and TCM.
•TCM malfunction.
STEP INSPECTION ACTION
1VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
•Has FREEZE FRAME PID DATA been
recorded?Yes Go to next step.
No Record FREEZE FRAME PID DATA on repair order, then
go to next step.
TR SWITCHTCM
TR SWITCH
HARNES SIDE CONNECTOR
TCM HARNES SIDE CONNECTOR IG SWITCHP
A
C
2B
1W
1T
1Z
E
D
G R
N
D

K2–132
ON-BOARD DIAGNOSTIC
DTC P0711A6E577018901207
Diagnostic procedure
End Of Sie
DTC P0711 Transaxle fluid temperature (TFT) sensor malfunction (stuck)
DETECTION
CONDITION•TFT sensor signal stays outside normal temperature range for 10 minute or more.
Diagnostic support note:
•This is a continuous monitor (CCM).
•MIL illuminates if TCM detects the above malfunction conditions in two consecutive drive cycles.
•PENDING CODE is available.
•FREEZE FRAME DATA is available.
•AT warning light does not indication.
•DTC is stored in TCM memory.
POSSIBLE
CAUSE•TFT sensor malfunction.
•Connector corrosion.
•TCM malfunction.
STEP INSPECTION ACTION
1VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
•Has FREEZE FRAME PID DATA been
recorded?Yes Go to next step.
No Record FREEZE FRAME PID DATA on repair order, then
go to next step.
2VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
•Check for related Service Bulletins and/or on-
line repair information availability.
•Is any related repair information available?Yes Perform repair or diagnosis according to available repair
information.
•If vehicle is not repaired, go to next step.
No Go to next step.
3INSPECT TFT SENSOR VOLTAGE
•Connect voltmeter to TCM terminal 1F.
•Turn ignition key to ON (engine OFF).
•Is TCM terminal voltage 1.55 V?Yes Go to next step.
No Go to Step 6.
4VERIFY CURRENT INPUT SIGNAL STATUS - IS
CONCERN INTERMITTENT OR CONSTANT?
•Start engine.
•Drive vehicle at 60 km/h {37 mph} or above
for 10 minutes or more.
—ATF 20 °C {68 °F}: 1.55 V
—ATF 60 °C {140 °F}: 0.7 V
•Does TCM terminal voltage change?Yes Go to Step 6.
No Go to next step.
5INSPECT TERMINAL CONDITION
•Turn ignition key to OFF.
•Disconnect terminal component No.2 (8-pin).
•Inspect terminals for corrosion.
•Are terminals okay?Yes Replace TFT sensor, then go to next step.
No Repair or replace terminals, then go to next step.
6VERIFY TROUBLESHOOTING OF DTC P0711
COMPLETED
•Make sure to reconnect all disconnected
connectors.
•Clear DTC from memory using WDS or
equivalent.
•Decrease ATF temperature to 20 °C {68 °F} or
below.
•Drive vehicle at 60 km/h {37 mph} or above
for 10 minutes or more.
•Is same DTC present?Yes Replace TCM, then go to next step.
(See K2–96 TCM REMOVAL/INSTALLATION.)
No Go to next step.
7VERIFY AFTER REPAIR PROCEDURE
•Perform “After Repair Procedure”.
(See K2–124 AFTER REPAIR PROCEDURE.)
•Is there any DTC present?Yes Go to applicable DTC inspection.
No Troubleshooting completed.

ON-BOARD DIAGNOSTIC
K2–133
K2
DTC P0712A6E577018901208
Diagnostic procedure
DTC P0712 Transaxle fluid temperature (TFT) sensor circuit malfunction (short to ground)
DETECTION
CONDITION•Signal from TFT sensor is 0.088 V or less for 20 seconds or more.
Diagnostic support note:
•This is a continuous monitor (CCM).
•MIL illuminates if TCM detects the above malfunction conditions in two consecutive drive cycles.
•PENDING CODE is available.
•FREEZE FRAME DATA is available.
•AT warning light indication.
•DTC is stored in TCM memory.
POSSIBLE
CAUSE•TFT sensor malfunction.
•Open circuit between TFT sensor and TCM terminal 1F
•Open circuit between TFT sensor and TCM terminal 1B
•Damaged connectors between TFT sensor and TCM
•TCM malfunction
STEP INSPECTION ACTION
1VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
•Has FREEZE FRAME PID DATA been
recorded?Yes Go to next step.
No Record FREEZE FRAME PID DATA on repair order, then
go to next step.
2VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
•Check for related Service Bulletins and/or on-
line repair information availability.
•Is any related repair information available?Yes Perform repair or diagnosis according to available repair
information.
•If vehicle is not repaired, go to next step.
No Go to next step.
3VERIFY CURRENT INPUT SIGNAL STATUS - IS
CONCERN INTERMITTENT OR CONSTANT?
•Turn ignition key to OFF.
•Connect voltmeter to TCM terminal 1F.
•Turn ignition key to ON (engine OFF).
•Are TCM terminal voltage within 0.2—4.9 V?Yes Go to intermittent concern troubleshooting procedure.
(See section F1.)
No Go to next step.
AT XTCM
IG1F
1B
JH
TFT SENSOR
TCM
HARNESS SIDE CONNECTORTERMINAL COMPONENT NO.2(8-PIN)
HARNESS SIDE CONNECTOR
COUPLER COMPONENT NO.2(8-PIN)
PART SIDE CONNECTOR

ON-BOARD DIAGNOSTIC
K2–135
K2
DTC P0713A6E577018901209
Diagnostic procedure
DTC P0713 Transaxle fluid temperature (TFT) sensor circuit malfunction (open circuit)
DETECTION
CONDITION•Vehicle speed is 20 km/h {12.4 mph} or greater, and signal from TFT sensor is 2.4 V or above for 300
seconds or more.
Diagnostic support note:
•This is a continuous monitor (CCM).
•MIL illuminates if TCM detects the above malfunction conditions in two consecutive drive cycles.
•PENDING CODE is available.
•FREEZE FRAME DATA is available.
•AT warning light indication.
•DTC is stored in TCM memory.
POSSIBLE
CAUSE•TFT sensor malfunction.
•Open circuit between TFT sensor and TCM terminal 1F
•Open circuit between TFT sensor and TCM terminal 1B
•Damaged connectors between TFT sensor and TCM
•TCM malfunction
STEP INSPECTION ACTION
1VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
•Has FREEZE FRAME PID DATA been
recorded?Yes Go to next step.
No Record FREEZE FRAME PID DATA on repair order, then
go to next step.
2VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
•Check for related Service Bulletins and/or on-
line repair information availability.
•Is any related repair information available?Yes Perform repair or diagnosis according to available repair
information.
•If vehicle is not repaired, go to next step.
No Go to next step.
3VERIFY CURRENT INPUT SIGNAL STATUS - IS
CONCERN INTERMITTENT OR CONSTANT?
•Turn ignition key to OFF.
•Connect voltmeter to TCM terminal 1F
•Turn ignition key to ON (engine OFF).
•Are TCM terminal voltage within 0.2—4.9 V?Yes Go to intermittent concern troubleshooting procedure.
(See section F1.)
No Go to next step.
AT XTCM
IG1F
1B
JH
TFT SENSOR
TCM
HARNESS SIDE CONNECTORTERMINAL COMPONENT NO.2(8-PIN)
HARNESS SIDE CONNECTOR
COUPLER COMPONENT NO.2(8-PIN)
PART SIDE CONNECTOR

ON-BOARD DIAGNOSTIC
K2–137
K2
DTC P0715A6E577018901210
DTC P0715 Input/turbine speed sensor circuit malfunction
DETECTION
CONDITION•The following condition is detected twice:
—Input/turbine speed sensor signal is 600 rpm or less while engine speed is 1,500 rpm or greater and
vehicle speed is 40 km/h {24.8 mph} or greater in D range.
Diagnostic support note:
•This is a continuous monitor (CCM).
•MIL illuminates if TCM detects the above malfunction conditions in two consecutive drive cycles.
•PENDING CODE is available.
•FREEZE FRAME DATA is available.
•AT warning light indication.
•DTC is stored in TCM memory.
POSSIBLE
CAUSE•Input/turbine speed sensor malfunction.
•Short to ground between input/turbine speed sensor terminal B and TCM terminal 1N
•Short to ground between input/turbine speed sensor terminal A and TCM terminal 2F
•Open circuit between input/turbine speed sensor terminal B and TCM terminal 1N
•Open circuit between input/turbine speed sensor terminal A and TCM terminal 2F
•Damaged connectors between input/turbine speed sensor and TCM.
•TCM malfunction.
AT X
B
E1NTCM
TCM
HARNESS SIDE CONNECTOR
TERMINAL COMPONENT
NO.2(8-PIN)
HARNESS SIDE CONNECTORCOUPLER COMPONENT
(8-PIN)
PART SIDE CONNECTORINPUT/TURBINE
SPEED SENSOR
HARNESS SIDE CONNECTOR 2F B
A
A
F
INPUT/TURBINE
SPEED SENSOR