Mazda 6. Manual — part 359

)

STEP

INSPECTION

ACTION

DTC 35

Clutch switch (MTX), TR switch (ATX)

DETECTION

CONDITION

• Voltage detected at cruise actuator connector terminal F is not approximately 0 V.

POSSIBLE

CAUSE

• Cruise actuator malfunction

• Starter relay malfunction (ATX)

• Clutch switch malfunction (MTX)

• TR switch malfunction (ATX)

• Open circuit in wiring harness between PCM and clutch switch (MTX)

• Open circuit in wiring harness between starter relay and TR switch (ATX)

• Open circuit in wiring harness between cruise actuator and clutch switch (MTX) or TR switch (ATX)

STEP

INSPECTION

ACTION

• Does vehicle has MTX?

Yes

Go to next step.

Go to step 5.

INSPECT CLUTCH SWITCH
Is clutch switch okay?

Yes

Go to next step.

Replace clutch switch.

* 3

INSPECT WIRING HARNESS BETWEEN
CLUTCH SWITCH AND GROUND FOR
CONTINUITY

• Disconnect clutch switch connector.

• Is there continuity between clutch switch

connector terminal B and ground?

Yes

Go to next step.

Repair wiring harness.
(Clutch switch—ground)

* 4

INSPECT WIRING HARNESS BETWEEN
CRUISE ACTUATOR AND CLUTCH SWITCH
FOR CONTINUITY

• Disconnect cruise actuator connector.

• Is there continuity between cruise actuator

connector terminal F and clutch switch
connector terminal A?

Yes

Replace cluise actuator.
(See

K–14 TRANSAXLE RANGE (TR) SWITCH

)

Repair wiring harness.
(Cruise actuator—clutch switch)

T–184

ON-BOARD DIAGNOSTIC [CRUISE CONTROL SYSTEM]

End Of Sie

DTC 37

A6E817266350W07

Diagnostic procedure

INSPECT TR SWITCH

• Inspect TR switch.

(See

INSPECTION

K–15 TRANSAXLE RANGE (TR) SWITCH REMOVAL/

• Is TR switch okay?

Yes

Go to next step.

Repair TR switch.
(See

* 6

INSPECT WIRING HARNESS BETWEEN TR
SWITCH AND GROUND FOR CONTINUITY

• Disconnect TR switch connector.

• Is there continuity between TR switch

connector terminal A and ground?

Yes

Go to next step.

Repair wiring harness (TR switch—ground ) or inspect
starter.

* 7

INSPECT WIRING HARNESS BETWEEN
CRUISE ACTUATOR AND TR SWITCH FOR
CONTINUITY

• Disconnect cruise actuator connector.

• Is there continuity between cruise actuator

connector terminal F and TR switch
connector terminal F?

Yes

Replace cruise actuator.
(See

T–75 INSTRUMENT CLUSTER INPUT/

Repair wiring harness. (cruise actuator—TR switch)

STEP

INSPECTION

ACTION

DTC 37

Vehicle speed sensor

DETECTION

CONDITION

• Vehicle speed signal is not detected at cruise actuator connector terminal A.

POSSIBLE

CAUSE

• Cruise actuator malfunction

• DSC HU/CM (with ABS/TCS HU/CM)

• Open or short circuit in wiring harness between ABS/TCS cruise actuator and DSC HU/CM (without

DSC: ABS/TCS HU/CM)

STEP

INSPECTION

ACTION

INSPECT SPEEDOMETER OPERATION

• Does speedometer operate correctly?

Yes

Go to next step.

Perform instrument cluster input/output check
mode.
(See

OUTPUT CHECK MODE

INSPECT PCM ON-BOARD DIAGNOSTIC

• Drive the vehicle at more than 40 km/h {25 mph}.

• Check the DTC for PCM ON-BOARD

DIAGNOSTIC.

• Is DTC P0500 displayed?

Yes

Go to applicable DTC inspection.

Go to next step.

* 3

VERIFY WHICH IS MALFUNCTIONING‚ WIRING
HARNESS WITH DSC OR CRUISE ACTUATOR

• Disconnect cruise actuator connector and DSC

HU/CM connector.

• Is there continuity between cruise actuator

connector terminal A and DSC HU/CM connector
terminal AE?

With ABS/TCS

• Disconnect cruise actuator connector and ABS/

TCS HU/CM connector.

• Is there continuity between cruise actuator

connector terminal A and ABS/TCS connector
terminal V?

Yes

Replace cruise actuator.
(See

)

Repair wiring harness.
With DSC
(DSC HU/CM—Cruise actuator)
With ABS/TCS
(ABS/TCS HU/CM—Cruise actuator)

ON-BOARD DIAGNOSTIC [CRUISE CONTROL SYSTEM]

T–185

End Of Sie

INSPECTION OF DTCS FOR CONDITION DETECTION MODE

A6E817266350W08

Note

• The cruise set indicator light will illuminate for 3 seconds, when condition detection mode is on.

• If the RESUME/ACCEL switch on the cruise control switch is malfunctioning, the cruise set indicator light

will not give a correct indication when you inspect the system.

1. Drive the vehicle at 30 km/h {19 mph} or more.
2. Press on the cruise control main switch (1).
3. Operate each of the cruise control switches.
4. Stop the vehicle and let it idle.
5. Turn and hold the RESUME/ACCEL switch on for

at least 3 seconds (2). The cruise set indicator
light will illuminate for 3 seconds, and then go off
for at least 2 seconds. Thus, the condition
detection mode begins.

• If a DTC is indicated, inspect the

corresponding system area.

• If normal, DTC(s) will not be indicated.

6. The condition detection mode is canceled by

turning the ignition switch to LOCK position or
turning off the cruise control main switch.

Condition Code List

Note

• When two or more DTCs are indicated, inspect the malfunction with the smallest number first.

Inspection of Diagnostic Trouble Codes
Foreword

• When performing an asterisked (*) troubleshooting inspection‚ shake the wiring harness and connectors while

doing the inspection to discover whether poor contact points are the cause of any intermittent malfunction. If
there is a problem‚ check to make sure connectors‚ terminals and wiring harness are connected correctly and
undamaged.

End Of Sie

A6E8172W013

DTC

Output pattern

Diagnosed circuit

Page

Cruise actuator (Drive circuit)

(See

T–186 DTC 01

Brake switch

(See

T–186 DTC 05

Brake switch
Brake switch 2

(See

T–186 DTC 07

Cruise control switch (SET/
COAST switch)

(See

T–187 DTC 11

Cruise control switch (RESUME/
ACCEL switch)

(See

T–187 DTC 12

Cruise control switch (Ground
circuit)

(See

T–188 DTC 13

Cruise actuator (Control circuit)

(See

T–188 DTC 15

T–110 CRUISE ACTUATOR REMOVAL/INSTALLATION

T–186

ON-BOARD DIAGNOSTIC [CRUISE CONTROL SYSTEM]

DTC 01

A6E817266350W09

Diagnostic procedure

End Of Sie

DTC 05

A6E817266350W10

Diagnostic procedure

End Of Sie

DTC 07

A6E817266350W11

DTC 01

Cruise actuator (Drive circuit)

DETECTION

CONDITION

• Malfunction in cruise actuator circuit (drive circuit)

POSSIBLE

CAUSE

• Cruise actuator malfunction

ACTION

REPLACE CRUISE ACTUATOR IF IT IS MALFUNCTIONING

• Replace cruise actuator.

(See

DTC 05

Brake switch

DETECTION

CONDITION

• Voltage detected at cruise actuator connector terminal C is always approximately 0 V.

POSSIBLE

CAUSE

• Cruise actuator malfunction

INSPECTION

ACTION

INSPECT DTC FOR OPERATION MODE

• Was operation mode for DTC 31 performed?

Yes

Perform operation mode for DTC 31 on-board diagnostic
again. Even if no malfunction is detected in operation mode,
if DTC 05 is indicated in condition detection mode on-board
diagnostic, replace cruise actuator.
(See