2
z
Verify related Service Bulletins and/or
on-line repair information availability.
z
Is any related Service Bulletins
available?
Yes
z
If the vehicle is not repaired, go to the
next step.
No
Go to the next step.
3
INSPECT POOR CONNECTION OF CHT
SENSOR CONNECTOR
z
Turn the ignition switch off.
z
Disconnect CHT sensor connector.
z
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
z
Are there any malfunction?
Yes Repair or replace suspected part, then go to
Step 8.
No
Go to the next step.
4
INSPECT CHT SENSOR SIGNAL
CIRCUIT FOR SHORT TO POWER
SUPPLY
z
Turn the ignition switch to the ON
position (Engine off).
z
Measure the voltage between CHT
sensor terminal B (wiring harness-side)
and body ground.
z
Is the voltage B+?
Yes
Repair or replace suspected part, then go to
Step 8.
No
Go to the next step.
5
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
z
Disconnect the PCM connector.
z
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
z
Are there any malfunction?
Yes
Repair or replace suspected part, then go to
Step 8.
No
Go to the next step.
6
INSPECT CHT SENSOR CIRCUIT FOR
OPEN CIRCUIT
z
Inspect the continuity between the
following circuit:
{
CHT sensor terminal A (wiring
harness-side) and PCM terminal
2AL (wiring harness-side).
{
CHT sensor terminal B (wiring
harness-side) and PCM terminal
2AN (wiring harness-side).
z
Are there continuity?
Yes Go to the next step.
No
Repair or replace suspected part, then go to
Step 8.
INSPECT CHT SENSOR
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:41 AM
Page 327
© 2005 Mitchell Repair Information Company, LLC.
