Mazda Protege 5. Manual — part 81

ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)]

01–02B–144

End Of Sie

DTC P1562 [FS]

A3U010201083W10

3

CLASSIFY INTERMITTENT CONCERN OR
CONTINUOUS CONCERN

•

Clear DTC from PCM memory using WDS or
equipment.

•

Verify that following conditions are met.
— ECT: at 20

°°°°

C {68

°°°°

F}

•

Drive vehicle under following conditions:
— Engine speed: above 3,000 rpm
— MAF: below 45.2 g/s {6.0 lb/min}

•

Is pending code of same DTC present?

Yes Go to next step.

No

Intermittent concern exists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See 01–03B–4 INTERMITTENT CONCERN
TROUBLESHOOTING [FS].)

4

VERIFY STORED OTHER DTCS

•

Verify stored DTCs using WDS or equipment.

•

Is other DTC present except P1512?

Yes Go to appropriate DTC troubleshooting procedures.

No

Go to next step.

5

INSPECT VTCS SHUTTER VALVE ACTUATOR

•

Carry out “VTCS operation inspection”
(See 01–03B–57 Variable Tumble Control
System (VTCS) Inspection.)

•

Is VTCS shutter valve actuator okay?

Yes Go to next step.

No

Replace VTCS shutter valve actuator, then go to Step 8.

6

INSPECT VTCS SOLENOID VALVE

•

Carry out “VTCS solenoid valve airflow
inspection”
(See 01–13B–15 VARIABLE TUMBLE
CONTROL SYSTEM (VTCS) SOLENOID
VALVE INSPECTION [FS].)

•

Is VTCS solenoid valve okay?

Yes Go to next step.

No

Replace VTCS solenoid valve, then go to Step 8.

7

CHECK PCM POOR CONNECTION

•

Check for poor connection at PCM terminal 73
(damaged/pulled-out terminals, corrosion,
etc.).

•

Is there malfunction?

Yes Repair terminal, then go to next step.

No

Go to next step.

8

VERIFY TROUBLESHOOTING OF DTC P1512
COMPLETED

•

Make sure to reconnect all disconnected
connectors.

•

Start engine.

•

Clear DTC from PCM memory using WDS or
equipment.

•

Start engine.

•

Verify that following conditions are met.
— ECT: at 20

°°°°

C {68

°°°°

F}

•

Drive vehicle under following conditions:
— Engine speed: above 3,000 rpm
— MAF: below 45.2 g/s {6.0 lb/min}

•

Is pending code of same DTC present?

Yes Replace PCM, then go to next step.

No

Go to next step.

9

VERIFY AFTER REPAIR PROCEDURE

•

Perform “After Repair Procedure”.
(See 01–02B–9 AFTER REPAIR
PROCEDURE [FS].)

•

Is there any DTC present?

Yes Go to applicable DTC inspection.

(See 01–02B–15 DTC TABLE [FS].)

No

Troubleshooting completed.

STEP

INSPECTION

ACTION

DTC P1562

PCM +BB voltage low

DETECTION

CONDITION

•

PCM monitors voltage of backup battery positive terminal at PCM terminal 55 after engine is started. If the
PCM detected battery positive terminal voltage below 2.5 V for 2 seconds, PCM determines that backup
voltage circuit has malfunction.

Diagnostic support note

•

This is a continuous monitor (CCM).

•

MIL illuminates if PCM detects the above malfunction condition during first drive cycle. Therefore,
PENDING CODE is not available.

•

FREEZE FRAME DATA is available.

•

DTC is stored in PCM memory.

POSSIBLE

CAUSE

•

Open circuit or short to ground in wiring between battery positive terminal and PCM terminal 55

•

Poor connection of PCM connector

•

PCM malfunction

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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)]

01–02B–145

01–02B

Diagnostic procedure

DTC P1562

PCM +BB voltage low

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED

•

Has FREEZE FRAME DATA been recorded?

Yes Go to next step.

No

Record FREEZE FRAME DATA on repair order, then go to
next step.

2

VERIFY RELATED REPAIR INFORMATION
AVAILABILITY

•

Check for related Service Bulletins availability.

•

Is any repair information available?

Yes Perform repair or diagnosis according to available repair

information.

•

If vehicle is not repaired, then go to next step.

No

Go to next step.

3

INSPECT MONITOR CIRCUIT FOR SHORT TO
GROUND

•

Disconnect both battery cables.

•

Measure resistance between battery positive
cable and body ground.

•

Is resistance more than 500 ohms?

Yes Go to next step.

No

Repair or replace harness between battery positive left
terminal and PCM terminal 55 for short to ground, then go
to Step 6.

4

INSPECT PCM CONNECTOR FOR POOR
CONNECTION

•

Disconnect PCM connector.

•

Check for poor connection at terminal 55
(damaged/pulled-out terminals, corrosion,
etc.).

•

Is there malfunction?

Yes Repair terminals, then go to Step 6.

No

Go to next step.

5

INSPECT MONITOR CIRCUIT FOR OPEN
CIRCUIT

•

Disconnect battery cables.

•

Connect breakout box with PCM disconnected.

•

Check for continuity between battery positive
cable and breakout box terminal 55.

•

Is there continuity?

Yes Go to next step.

No

Repair or replace harness for open, then go to next step.

6

VERIFY TROUBLESHOOTING OF DTC P1562
COMPLETED

•

Make sure to reconnect all disconnected
connectors.

•

Clear DTC using WDS or equivalent.

•

Turn ignition key to OFF, then start engine.

•

Is same DTC present?

Yes Replace PCM, then go to next step.

No

Go to next step.

7

VERIFY AFTER REPAIR PROCEDURE

•

Perform “After Repair Procedure”.
(See 01–02B–9 AFTER REPAIR
PROCEDURE [FS].)

•

Is there any DTC present?

Yes Go to applicable DTC inspection.

(See 01–02B–15 DTC TABLE [FS].)

No

Troubleshooting completed.

1712-1U-01G(01-02B).fm 145 ページ ２００１年６月２９日 金曜日 午後３時２４分

ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)]

01–02B–146

End Of Sie

DTC P1569 [FS]

A3U010201083W11

Diagnostic procedure

DTC P1569

Variable tamble control system (VTCS) solenoid valve circuit low input

DETECTION

CONDITION

•

PCM monitors input voltages from VTCS solenoid valve. If voltage at PCM terminal 73 is low when VTCS
solenoid valve OFF, PCM determines that VTCS solenoid valve has malfunction.

Diagnostic support note

•

This is a continuous monitor (CCM).

•

MIL illuminates if PCM detects the above the above malfunction condition in two consecutive drive cycles.

•

PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.

•

FREEZE FRAME DATA is available.

•

DTC is stored in PCM memory.

POSSIBLE

CAUSE

•

Poor connection of connectors at PCM and/or VTCS solenoid valve

•

Short to ground in wiring between VTCS solenoid valve terminal B and PCM terminal 73

•

Open circuit in wiring between main relay terminal D and VTCS solenoid valve terminal A

•

Open circuit in wiring between VTCS solenoid valve terminal B and PCM terminal 73

•

VTCS solenoid valve malfunction

•

PCM malfunction

STEP

INSPECTION

ACTION

1

CHECK FREEZE FRAME DATA HAS BEEN
RECORDED

•

Has FREEZE FRAME DATA been recorded?

Yes Go to next step.

No

Record FREEZE FRAME DATA on repair order, then go to
next step.

2

VERIFY RELATED REPAIR INFORMATION
AVAILABILITY

•

Check for related Service Bulletins 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.

3

CLASSIFY INTERMITTENT CONCERN OR
CONTINUOUS CONCERN

•

Clear DTC from PCM memory using WDS or
equipment.

•

Start engine.

•

Is same DTC present?

Yes Go to next step.

No

Intermittent concern exists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See 01–03B–4 INTERMITTENT CONCERN
TROUBLESHOOTING [FS].)

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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)]

01–02B–147

01–02B

End Of Sie

4

CLASSIFY OPEN CIRCUIT OR SHORT TO
GROUND MALFUNCTION

•

Disconnect VTCS solenoid valve tube that
connects to intake manifold.

•

Connect vacuum pump to VTCS solenoid
valve.

•

Apply vacuum and wait 5 seconds.

•

Is vacuum maintained?

Yes Go to Step 6.

No

Go to next step.

5

INSPECT PASSAGE CONTROL OF VTCS
SOLENOID VALVE

•

Turn ignition key to OFF.

•

Disconnect VTCS solenoid valve connector.

•

Is vacuum maintained?

Yes Repair or replace harness between PCM terminal 73 and

VTCS solenoid valve terminal B for short to ground, then go
to Step 11.

No

Replace VTCS solenoid valve, then go to Step 11.

6

INSPECT VTCS SOLENOID VALVE
CONNECTOR FOR POOR CONNECTION

•

Turn ignition key to OFF.

•

Check for poor connection (damaged/pulled-
out pins, corrosion, etc.).

•

Is there malfunction?

Yes Repair or replace terminal, then go to Step 11.

No

Go to next step.

7

INSPECT VTCS SOLENOID VALVE

•

Measure resistance between VTCS solenoid
valve terminals (part-side).

•

Is resistance within 22—26 ohms?

Yes Go to next step.

No

Replace VTCS solenoid valve, then go to Step 11.

8

INSPECT VTCS SOLENOID VALVE POWER
SUPPLY CIRCUIT FOR OPEN CIRCUIT

•

Disconnect VTCS solenoid valve connector.

•

Turn ignition key to ON (Engine OFF).

•

Measure voltage between VTCS solenoid
valve terminal A (harness-side) and body
ground.

•

Is voltage B+?

Yes Go to next step.

No

Repair or replace harness for open, then go to Step 11.

9

INSPECT PCM CONNECTOR FOR POOR
CONNECTION

•

Turn ignition key to OFF.

•

Disconnect PCM connector.

•

Check for poor connection at PCM terminal 73.
(damaged/pulled-out pins, corrosion, etc.).

•

Is there malfunction?

Yes Repair terminal, then go to Step 11.

No

Go to next step.

10

INSPECT VTCS SOLENOID VALVE CONTROL
CIRCUIT FOR OPEN CIRCUIT

•

Connect VTCS solenoid valve connector.

•

Connect breakout box with PCM disconnected.

•

Turn ignition key to ON (Engine OFF).

•

Measure voltage between breakout box
terminal 73 and body ground.

•

Is voltage B+?

Yes Go to next step.

No

Repair or replace harness for open or short to ground
circuit, then go to next step.

11

VERIFY TROUBLESHOOTING OF DTC P1569
COMPLETED

•

Make sure to reconnect all disconnected
connectors.

•

Clear DTC from PCM memory using WDS or
equivalent.

•

Start engine.

•

Verify that following conditions are met.
— ECT: above 65

°°°°

C {149

°°°°

F}

— Engine speed: below 3,250 rpm

•

Is pending code of same DTC present?

Yes Replace PCM, then go to next step.

No

Go to next step.

12

VERIFY AFTER REPAIR PROCEDURE

•

Perform “After Repair Procedure”.
(See 01–02B–9 AFTER REPAIR
PROCEDURE [FS].)

•

Is there any DTC present?

Yes Go to applicable DTC inspection.

(See 01–02B–15 DTC TABLE [FS].)

No

Troubleshooting completed.

STEP

INSPECTION

ACTION

1712-1U-01G(01-02B).fm 147 ページ ２００１年６月２９日 金曜日 午後３時２４分