Mazda CX-7 2007 Workshop Manual page 150

STEP
3 INSPECT TP SENSOR CONNECTOR FOR
POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the TP sensor connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion).
• Is there any malfunction?
3 CLASSIFY TP SENSOR OR HARNESS
MALFUNCTION
• Connect the M-MDS.
• Access the TP2 PID.
• Disconnect the throttle body connector.
• Connect a jumper wire between throttle body
terminals B and C (harness-side).
• Is the voltageabove 4.9 V?
4 INSPECT TP SENSOR
• Perform the TP sensor inspection.
(See01-40-32 THROTTLE POSITION (TP)
SENSOR INSPECTION[L3 WITH TC].)
• Is the TP sensor normal?
5 INSPECT POWER SUPPLY CIRCUIT VOLTAGE
AT THROTTLE BODY CONNECTOR
Note
• If DTC P0107 and P2228 are also retrieved
with P0122, go to the CONSTANT
VOLTAGE troubleshooting procedure.
• Turn ignition switch to the ON position (Engine
off).
• Measure the voltage at throttle body terminal B
(harness-side).
• Is the voltagewithin 4.5— 5.5 V?
6 INSPECT TP2 SIGNAL CIRCUIT FOR OPEN
CIRCUIT
• Turn the ignition switch off.
• Inspect for continuity between throttle body
terminal C (harness-side) and PCM terminal
2AL.
• Is there continuity?
7 INSPECT TP2 SIGNAL CIRCUIT FOR SHORT
TO GROUND
• Inspect for continuity between throttle body
terminal C (harness-side) and body ground.
• Is there continuity?
8 VERIFY TROUBLESHOOTING OF DTC P0222
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn ignition switch to the ON position (Engine
off).
• Clear the DTC from the PCM memory using
the M-MDS–2.3— 5.0 kPa {–0.023— 0.05 kgf/
2
cm , –0.34— 0.72 psi}.
• Start the engine and warm it up completely.
• Is same DTC present?
9 VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
(See01-02-10 AFTER REPAIR
PROCEDURE[L3 WITH TC].)
• Are any DTCs present?
End Of Sie
01-02–108
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
Yes Go to the next step.
No Go to step 5.
Yes Inspect throttle body connector terminal B connection for
poor connection. Repair or replace if necessary, then go to
Step 8.
No Replace throttle body, then go to Step 8.
Yes Go to the next step.
No Repair or replace for an open circuit between throttle body
connector terminal B and PCM connector terminal 2AO
(harness-side).
Then, then go to Step 8.
Yes Go to the next step.
No Repair or replace the suspected wiring harness, then go to
Step 8.
Yes Repair or replace the suspected wiring harness, then go to
the next step.
No Go to the next step.
Yes Replace the PCM, then go to the next step.
(See01-40-6 PCM REMOVAL/INSTALLATION[L3 WITH
TC].)
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No Troubleshooting completed.
ACTION