Mazda CX-7 2007 Workshop Manual page 117

STEP
5 VERIFY MONITORING CONDITION FOR
REPAIR VERIFICATION
• Make sure to reconnect all disconnected
connectors.
• Cool down engine.
Note
• If workshop inside and outside
temperature difference is significant,
PCM might not operate thermostat
monitor. Therefore, it is recommended to
cool down engine out of workshop.
• Turn ignition switch to ON (Engine off).
• Clear the DTC from the PCM memory using
the M-MDS.
• Access ECT, IAT PIDs and make sure that
each value is within following specifications.
— ECT: below 36 °C {97 °F} (for P0128 only)
— IAT: above –10°C {14°F}
— Difference between ECT and IAT: below
6°C {43°F}
• Is there any PID that is out of specification?
6 VERIFY TROUBLESHOOTING OF DTC P0126
COMPLETED
• Start engine and turn off E/L and A/C.
• Access DIAGNOSTIC MONITORING TEST
RESULTS using the M-MDS and monitor TEST
#10: E1: 81 (ECT).
Note
• This test requires actual driving. Chassis
roller cannot be used for this test.
• During test drive, constant speed should
be maintained, although 2 or 3 stops
during every5 minutes of driving time
(e.g. for traffic signals) is acceptable.
Stop-and-go (e.g. in case of traffic
congestion) is not acceptable during the
test period.
• Test period depends on ECT at engine
start. (e.g. if ECT is –10°C {14°F},
monitoring period is38 minutes and
ECT is 30 °C {86 °F}, monitoring period
is 8 minutes)
• Verify TEST #10: E1: 81 (ECT) value.
• Is value above minimum value?
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Take corrective action (e.g. cool down engine), then repeat
this step.
No Go to the next step for DTC P0126 or go to step 7 for DTC
P0128.
Yes Go to Step 8.
No Replace PCM, then go to Step 8.
ACTION
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01-02