P0032

E : DTC P0031, P0032. BANK 1 HO2S HEATER.

E1 : CHECK THE POWER SUPPLY CIRCUIT TO THE BANK 1 HO2S HEATER
1. Disconnect HO2S sensor electrical connector, PI10.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between the bank 1 HO2S electrical connector PI10, pin 1 (WG) and GROUND.

Is the voltage less than 10 volts?

Yes
Goto E6

No
Goto E2

E2 : CHECK THE GROUND CIRCUIT TO THE BANK 1 HO2S HEATER FOR OPEN CIRCUIT
1. Turn the ignition switch to the OFF position.
2. Disconnect the PCM electrical connector PI01.
3. Measure the resistance between the bank 1 HO2S electrical connector PI10, pin 2 (RU) and the PCM electrical connector PI01, pin 1 and pin 2 (RU).

Is the resistance of each wire less than 5 ohms?

Yes
Goto E3

No
Repair the circuit. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

E3 : CHECK THE BANK 1 HO2S HEATER RESISTANCE
1. Measure the resistance between pins 1 and 2 of the bank 1 H02S.

Is the resistance 3.3 ohms?

Yes
Goto E4

No
Install a new bank 1 H02S. CLEAR the DTCs. TEST the system for normal operation.

E4 : CHECK THE BANK 1 HO2S GROUND CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between the bank 1 HO2S electrical connector PI10, pin 2 (RU) and GROUND.

Is the resistance less than 10,000 ohms?

Yes
Repair the short to GROUND. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

No
Goto E5

E5 : CHECK THE BANK 1 HO2S GROUND CIRCUIT FOR SHORT TO BATTERY
1. Check for a voltage between the bank 1 HO2S electrical connector PI10, pin 2 (RU) and GROUND.

Is the voltage greater than 1 volt?

Yes
Repair the short to battery. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

No
Install a new bank 1 HO2S. CLEAR DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new PCM.

E6 : CHECK FUSE 20 OF THE FRONT POWER DISTRIBUTION BOX
1. Check the fuse.

Is the fuse OK?

Yes
Goto E8

No
Goto E7

E7 : CHECK FUSE 20 OF THE FRONT POWER DISTRIBUTION BOX FOR A SHORT TO GROUND
1. Measure the resistance between electrical connector FH32 pin 26 of the engine compartment fuse box and GROUND.

Is the resistance less than 10,000 ohms?

Yes
REPAIR short to ground between the engine compartment fuse box and the RH bank HO2S. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

No
Install a new fuse. CLEAR the DTC. TEST the system for normal operation.

E8 : CHECK THE POWER SUPPLY TO FUSE 20 OF THE FRONT POWER DISTRIBUTION BOX
1. Turn the ignition switch to the ON position.
2. Measure the voltage between fuse 20 electrical connector FH32 pin 26 and GROUND.

Is the voltage less than 10 volts?

Yes
Repair the circuit from the PCM control relay to the engine compartment fuse box. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

No
Repair the circuit between the battery and the EMS relay. Test the relay, renew as necessary. CLEAR the DTC. TEST the system for normal operation.