PA Sensor Troubleshooting (flowchart, cont'd)
6-53flowchart1
(From page 6-52)
2
Is there approx. 3V ?
YES
Substitute a known-good ECU and recheck. If symptom/indication goes away, replace the original ECU.
NO
3
Disconnect the main wire harness from PA sensor.
4
Measure voltage between C9 (-) terminal and C12 (-) terminal.
5
Is there approx. 5V ?
NO
Repair short in RED/WHT wire between ECU (C9) and PA sensor.
YES
6
Measure voltage between WHT/YEL (+) terminal and GRN/WHT (-) terminal.
7
Is there approx. 5V ?
NO
Measure voltage between YEL/WHT (+) terminal and body ground.
Measure voltage between YEL/WHT (+) terminal and body ground.
Is there approx. 5V ?
YES
8
Measure voltage between RED/WHT (+) terminal and GRN/WHT (-) terminal.
9
Is there approx. 5V ?
NO
Repair open in RED/WHT wire between ECU (C9) and PA sensor.
YES
Replace PA sensor.