## PGM-FI System

#### DTC Troubleshooting (cont'd)

11-369

DTC P0132: Primary HO2S (Sensor 1) Circuit High Voltage

1. Reset the ECM/PCM (see page 11-312).
2. Start the engine. Hold the engine at 3,000 rpm (min-1) with no load (in Park or neutral) until the radiator fan comes on.
3. Check the primary HO2S (Sensor 1) output voltage with the scan tool.

Does the voltage stay at 0.9 V or more?

YES | - Go to step 4.
NO | - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the primary HO2S (Sensor 1) and at the ECM/PCM.

4. Turn the ignition switch OFF.
5. Disconnect the primary HO2S (Sensor 1) 4P connector.
6. Connect the primary HO2S (Sensor 1) 4P connector terminals No. 1 and No. 2 with a jumper wire.

PRIMARY HO2S (SENSOR 1) 4P CONNECTOR

JUMPER WIRE

Terminal side of male terminals

7. Turn the ignition switch ON (II).
8. Check the primary HO2S (Sensor 1) output voltage with the scan tool.

Is there 0.9 V or more?

YES | - Go to step 9.
NO | - Replace the primary HO2S (Sensor 1).

9. Turn the ignition switch OFF.

10. Connect ECM/PCM connector terminals A6 and A10 with a jumper wire.

ECM/PCM CONNECTOR A (31P)

JUMPER WIRE

Wire side of female terminals

11. Turn the ignition switch ON (II).
12. Check the primary HO2S (Sensor 1) output voltage with the scan tool.

Is there 0.9 V or more?

YES | - Substitute a known-good ECM/PCM and recheck (see page 11-313). If symptom/indication goes away, replace the original ECM/PCM.
NO | - Repair open in the wire between the ECM/PCM (A6, A10) and the primary HO2S (Sensor 1).