Mazda CX-9 Grand Touring 2009 Manual page 1273

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
body ground.
Are there voltage B+?
INSPECT TP SENSOR SIGNAL
CIRCUITS FOR SHORT EACH
OTHER
Turn the ignition switch off.
Disconnect the throttle body and
5
PCM connector.
Measure resistance between throttle
body terminal F and C.
Is the resistance more than 10
kilohms?
VERIFY TROUBLESHOOTING OF
DTC P2135 HAS BEEN COMPLETED
Verify that all disconnected
connectors reconnected.
6
Clear the DTC from the PCM
memory using the M-MDS.
Start the engine.
Is the same DTC present?
VERIFY AFTER REPAIR
PROCEDURE
Perform the "AFTER REPAIR
7
PROCEDURE". (See AFTER
REPAIR PROCEDURE [MZI-
3.7].)
Are any DTCs present?
DTC P2195, P2197 [MZI-3.7]
DTC P2195, P2197 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P2195 P2195: Front HO2S (RH) signal stuck lean
DTC P2197 P2197: Front HO2S (LH) signal stuck lean
DETECTION
CONDITION
2008 Mazda CX-9 Grand Touring
Yes Go to the next step.
No
Yes
No
Yes
No
A HO2S indicating lean at the end of a test is trying to correct for an over-rich
condition. The test fails when the fuel control system no longer detects
switching for a calibrated amount of time.
Front HO2S malfunction
Fuel injector malfunction
Insufficient fuel line pressure
Repair or replace suspected part, then go to the
next step.
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7] .)
Go to the next step.
Go to the applicable DTC inspection. (See DTC
TABLE [MZI-3.7].)
DTC troubleshooting completed.