Dtc P0506[L3 With Tc] - Mazda CX-7 2007 Workshop Manual

STEP
4 INSPECT A/C MAGNETIC CLUTCH OPERATION
Note
• The following test should be performed for
vehicles with A/C. Go to the next step for
vehicles without A/C
• Turn the fan switch off.
• Is the magnetic clutch still on?
5 INSPECT GENERATOR CONTROL CIRCUIT
MALFUNCTION
• Apply electrical load.
• Does the engine speed increase?
6 INSPECT AIR CLEANER ELEMENT
• Remove the air cleaner element with the
engine running.
• Does the engine speed increase?
7 INSPECT THROTTLE BODY PASSAGE
• Is the throttle body clogged?
8 INSPECT ENGINE COMPRESSION
• Inspect the engine compression.
(See01-10-9 COMPRESSION
INSPECTION[L3 WITH TC].)
• Is the engine compression normal?
9 VERIFY TROUBLESHOOTING OF DTC P0505
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC using the M-MDS.
• Perform the KOER Self-Test.
• Is the same DTC present?
10 VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
(See01-02-10 AFTER REPAIR
PROCEDURE[L3 WITH TC].)
• Are any DTCs present?
End Of Sie

DTC P0506[L3 WITH TC]

DTC P0506 Idle control system RPM lower than expected
• Actual idle speed is lower than expected by 100 rpm for 14 s when the brake pedal is depressed (brake
switch is on) and the steering wheel is held straight ahead (power steering pressure switch is off).
Note
• If the atmospheric pressure is less than 72.3 kPa {542 mmHg, 21.3 inHg} or the intake air temperature
is below –10 °C {14 °F}, the PCM cancels the diagnosis of P0506.
DETECTION
Diagnostic support note
CONDITION
• 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 PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in PCM memory.
• Electronic throttle control system malfunction
• Air cleaner element clogged
• Air intake passage clogged
• A/C relay control circuit malfunction
POSSIBLE
• Generator malfunction
CAUSE
• Purge solenoid valve malfunction
• Low engine compression (Over capacity of blow-by gas)
• PCM malfunction
01-02–160
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Go to "A/C ALWAYS ON / A/C COMPRESSOR RUNS
CONTINUOUSLY." of ENGINE SYMPTOM
TROUBLESHOOTING then go to Step 9.
(See01-03-5 ENGINE SYMPTOM
TROUBLESHOOTING[L3 WITH TC].)
No Go to the next step.
Yes Go to the next step.
No Repair for a short to the power supply in the generator
control circuit, then go to Step 9.
Yes Clean or replace the air cleaner element, then go to Step 9.
No Go to the next step.
Yes Clean or replace the throttle body passage, then go to Step
9.
No Go to the next step.
Yes Go to the next step.
No Overhaul the engine, then go to the next step.
Yes Replace the PCM, then go to the next step.
(See01-40-6 PCM REMOVAL/INSTALLATION[L3 WITH
TC].)
No Go to the next step.
Yes Go to the applicable DTC troubleshooting.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No Troubleshooting completed.
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