F2–226
TROUBLESHOOTING
End Of Sie
8 Note
• Purpose of this step is to determine if
WDS or equivalent is communicating with
PCM.
Reconnect appropriate sensor connector.
Turn engine switch to ON.
Attempt to access ECT PID.
Can ECT PID be accessed?
Yes Go to next step.
No Go to Step 11.
9 Are DTCs present for two or more sensors
connected to PCM terminal 91?
Sensor connected to PCM terminal 91:
• Accelerator position sensor. (P0122, P0123,
P0222, P0223).
• ECT sensor (P0117, P0118)
• Fuel pressure sensor (P0192, P0193)
• Fuel temperature sensor (P0182, P0183)
• MAF/IAT sensor (P0102, P0103, P0112,
P0113)
• IAT sensor No.2 (P0097, P0098)
Yes Go to next step.
No Repair open GND circuit to sensor where constant
voltage circuit inspection failed.
10 Turn engine switch to OFF.
Disconnect WDS or equivalent from DLC-2.
Disconnect PCM connector.
Measure resistance between GND circuit at
appropriate sensor connector and PCM
connector terminal 91.
Is resistance less than 5.0 ohms?
Yes Reconnect sensor connector.
Go to appropriate DTC test.
No Repair open GND circuit.
11 Turn engine switch OFF.
Disconnect PCM connector.
Measure resistance between battery negative
terminal and PCM terminals 65, 85, 103 and
104.
Is each resistance less than 5.0 ohms?
Yes Go to next step.
No Repair open GND circuit.
12 Turn engine switch to OFF.
Measure resistance between GND circuit at
following sensor connector and GND:
• Accelerator position sensor
• ECT sensor
• BARO sensor
• Fuel pressure sensor
• Fuel temperature sensor
• MAF/IAT sensor
• IAT sensor No.2
Is resistance below 5.0 ohms?
Yes GND circuits are okay.
Inspect sensor connector for constant voltage again.
No Inspect for open GND circuit.
13 Turn engine switch to OFF.
Disconnect accelerator position sensor.
Turn engine switch to ON.
Measure voltage between constant voltage
circuit at accelerator position sensor and battery
negative terminal.
Is voltage less than 0.5V?
Yes Inspect sensor connector for constant voltage again.
No Repair constant voltage circuit shorted power in
harness.
14 Verify test results.
• If okay, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace PCM. (See F2–64 PCM REMOVAL/INSTALLATION)
STEP INSPECTION RESULTS ACTION
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