Mazda CX 7. Manual — part 52
ON-BOARD DIAGNOSTIC [L3 WITH TC]
01-02–163
01-02
End Of Sie
5
INSPECT ELECTRONIC THROTTLE CONTROL
SYSTEM MALFUNCTION
• Inspect the following parts:
— APP sensor
(See01-40-33 ACCELERATOR PEDAL
POSITION (APP) SENSOR
INSPECTION[L3 WITH TC].)
— TP sensor
(See01-40-32 THROTTLE POSITION (TP)
SENSOR INSPECTION[L3 WITH TC].)
• Are they normal?
Yes
Go to the next step.
No
Replace the necessary parts, then go to the next step.
6
VERIFY TROUBLESHOOTING OF DTC P0507
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Start the engine.
• Clear the DTC from the PCM memory using
the M-MDS.
• Depress the brake pedal for 14 s or more.
• Is the PENDING CODE for this DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
7
VERIFY AFTER REPAIR PROCEDURE
• Perform the “After Repair Procedure”.
(See01-02-10 AFTER REPAIR
PROCEDURE[L3 WITH TC].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No
Troubleshooting completed.
STEP
INSPECTION
ACTION
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ON-BOARD DIAGNOSTIC [L3 WITH TC]
01-02–164
DTC P0550[L3 WITH TC]
id010239808800
Diagnostic procedure
DTC P0550
PSP switch circuit malfunction
DETECTION
CONDITION
• The PCM monitors the PSP switch signal, If the input voltage is low voltage (switch stays on) for 1 min.
when the VSS is above 60.0 km/h {37.4 mph} and the ECT is above 60
°C {140 °F}, the PCM determines
that the PSP switch circuit has a malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
• MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in
one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive
cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in PCM memory.
POSSIBLE
CAUSE
• PSP switch malfunction
• Connector or terminal malfunction
• Short to ground in the wiring harness between the PSP switch terminal and PCM terminal 2T
• Open circuit in the wiring harness between the PSP switch terminal and PCM terminal 2T
• PCM malfunction
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has the FREEZE FRAME DATA been
recorded?
Yes
Go to the next step.
No
Record FREEZE FRAME DATA on the repair order, then go
to the next step.
2
VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Bulletins and/or on-
line repair formation availability.
• Is any related repair information available?
Yes
Perform the repair or diagnosis according to the available
repair information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
A
2T
PCM
PSP SWITCH
WIRING HARNESS SIDE CONNECTOR
PSP SWITCH
7
3
6
5
4
A
PCM
WIRING HARNESS SIDE CONNECTOR
2BE 2BA 2AW 2AS 2AO 2AK 2AG 2AC 2Y 2U 2Q 2M
2E
2A
2I
2BH 2BD 2AZ 2AV 2AR 2AN 2AJ 2AF 2AB 2X 2T 2P
2H
2D
2L
2BG 2BC 2AY 2AU 2AQ 2AM 2AI 2AE 2AA 2W 2S 2O
2G
2C
2K
2BF 2BB 2AX 2AT 2AP 2AL 2AH 2AD 2Z
2V 2R 2N
2F
2B
2J
1871-1U-06B(01-02).fm 164 ページ 2006年3月15日 水曜日 午前10時32分
ON-BOARD DIAGNOSTIC [L3 WITH TC]
01-02–165
01-02
End Of Sie
3
INSPECT PSP CONNECTOR FOR POOR
CONNECTION
• Turn the ignition switch off.
• Disconnect the PSP connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion).
• Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 8.
No
Go to the next step.
4
INSPECT PSP SWITCH
• Perform the PSP switch inspection.
(See01-40-22 POWER STEERING
PRESSURE (PSP) SWITCH INSPECTION[L3
WITH TC].)
• Is the PSP switch normal?
Yes
Go to the next step.
No
Replace the PSP switch, then go to Step 8.
5
INSPECT PSP SWITCH SIGNAL CIRCUIT FOR
SHORT TO GROUND
• Disconnect the PCM connector.
• Inspect for continuity between the PSP switch
terminal (harness-side) and body ground.
• Is there continuity?
Yes
Repair or replace the wiring harness for a short to ground,
then go to Step 8.
No
Go to the next step.
6
INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn ignition switch to OFF
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion).
• Is there any malfunction?
Yes
Repair the terminal, then go to Step 8.
No
Go to the next step.
7
INSPECT SIGNAL CIRCUIT MALFUNCTION
FOR OPEN CIRCUIT
• Inspect for continuity between PSP terminal A
(harness-side) and PCM terminal 2T (harness-
side).
• Is there continuity?
Yes
Repair or replace the wiring harness, then go to the next
step.
No
Go to the next step.
8
VERIFY TROUBLESHOOTING OF DTC P0550
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Start the engine.
• Clear the DTC from the PCM memory using
the M-MDS.
• Drive the vehicle above 60 km/h {37.3 mph}
for1 min.
• Verify that the ECT PID is above 60 °C {140
°F} using the M-MDS.
• Is the PENDING CODE for this DTC present?
Yes
Replace PCM, then go to the next step.
(See01-40-6 PCM REMOVAL/INSTALLATION[L3 WITH
TC].)
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
• Perform the “After Repair Procedure”.
(See01-14-4 AFTER REPAIR
PROCEDURE[L3 WITH TC].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No
Troubleshooting completed.
STEP
INSPECTION
ACTION
1871-1U-06B(01-02).fm 165 ページ 2006年3月15日 水曜日 午前10時32分
ON-BOARD DIAGNOSTIC [L3 WITH TC]
01-02–166
DTC P0564[L3 WITH TC]
id010239808900
DTC P0564
Cruise control switch circuit malfunction
DETECTION
CONDITION
• The PCM monitors the cruise control switch signal. If the PCM detects that any one of following switches
(Main, CANCEL, SET/COAST, RESUME/ACCEL) remains on for 2 min, the PCM determines that the
cruise control switch circuit has a malfunction.
Diagnostic support note
• This is a continuous monitor (Other).
• The MIL does not illuminate.
• FREEZE FRAME DATA is not available.
• DTCs are stored in PCM memory.
POSSIBLE
CAUSE
• Cruise control switch malfunction
• Connector or terminal malfunction
• Short to power circuit in wiring harness from cruise control switch terminal 2and PCM terminal 1AQ
• Short to ground circuit in wiring harness from cruise control switch terminal 2and PCM terminal 1AQ
• PCM malfunction
PCM
CRUISE CONTROL SWITCH
1AQ
2
3
PCM
WIRING HARNESS-SIDE CONNECTOR
CRUISE CONTROL SWITCH
WIRING HARNESS-SIDE CONNECTOR
5
4
3
3
2
1
5
4
8
7
1BE 1BA 1AW 1AS 1AO 1AK 1AG 1AC 1Y 1U 1Q 1M
1E
1A
1I
1BH 1BD 1AZ 1AV 1AR 1AN 1AJ 1AF 1AB 1X
1T
1P
1H
1D
1L
1BG 1BC 1AY 1AU 1AQ 1AM 1AI 1AE 1AA 1W 1S 1O
1G
1C
1K
1BF 1BB 1AX 1AT 1AP 1AL 1AH 1AD 1Z
1V
1R 1N
1F
1B
1J
1871-1U-06B(01-02).fm 166 ページ 2006年3月15日 水曜日 午前10時32分
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