z
Are there voltage B+?
7
INSPECT MAF SENSOR SIGNAL
CIRCUIT FOR SHORT TO GROUND
z
Turn the ignition switch off.
z
Disconnect the MAF/IAT sensor and
PCM connector.
z
Inspect for continuity between the
following circuits:
{
MAF sensor terminal C (wiring
harness-side) and body ground
{
MAF sensor terminal D (wiring
harness-side) and body ground
z
Are there continuity?
Yes
Repair or replace the malfunctioning part, then
go to Step 10.
No
Go to next step.
8
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
z
Turn the ignition switch off.
z
Disconnect the MAF/IAT sensor
connector.
z
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
z
Are there any malfunction?
Yes Repair or replace the malfunctioning part, then
go to Step 10.
No
Go to next step.
9
INSPECT MAF SENSOR CIRCUIT FOR
OPEN CIRCUIT
z
Turn the ignition switch off.
z
Disconnect the PCM connector.
z
Disconnect the MAF/IAT sensor
connector.
z
Inspect for continuity between the
following terminals:
{
MAF sensor terminal C and
PCM terminal 1AJ
{
MAF sensor terminal D and
PCM terminal 1AN
z
Are there continuity?
Yes Go to the next step.
No
Repair or replace suspected part, then go to the
next step.
VERIFY TROUBLESHOOTING OF
DTC P0104 HAS BEEN COMPLETED
z
Verify that all disconnected connectors
reconnected.
Yes
Replace the PCM, then go to next step. (See
PCM REMOVAL/INSTALLATION [MZI-
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:34 AM
Page 61
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