CIRCUITS FOR OPEN CIRCUIT IN
WIRING HARNESS
z
Measure the resistance between
the following terminals:
{
PCM terminal 2Y (wiring
harness-side) and front
HO2S (RH) terminal B
(wiring harness-side)
{
PCM terminal 2BG (wiring
harness-side) and rear
HO2S (RH) terminal B
(wiring harness-side)
{
PCM terminal 2U (wiring
harness-side) and front
HO2S (LH) terminal B
(wiring harness-side)
{
PCM terminal 2BC (wiring
harness-side) and rear
HO2S (LH) terminal B
(wiring harness-side)
{
PCM terminal 2AL (wiring
harness-side) and HO2S
terminal D (wiring harness-
side)
z
Are the resistances less than 5
ohms?
NOTE:
z
Verify the wiring harness
terminals are in the proper
location.
No
Repair or replace suspected part, Then go
to Step 17.
10
INSPECT HO2S CONTROL
CIRCUIT IN WIRING HARNESS
z
Turn the ignition switch off.
z
Disconnect the HO2S connector.
z
Perform the KOEO self-test.
z
Measure the voltage between:
HO2S connector terminal C and D
on the wiring harness side.
z
Is the voltage more than 10 V?
Yes
Go to the next step.
No
Repair or replace suspected part, Then go
to the next step.
11
INSPECT HO2S HEATER FOR
SHORT IN WIRING HARNESS
Yes
Go to the next step.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:30 AM
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