P0031

E : DTC P0031. RIGHT-HAND BANK HO2S HEATER

G92429t29 : CHECK THE POWER SUPPLY CIRCUIT TO THE RIGHT-HAND BANK H02S HEATER
1. Disconnect H02S sensor electrical connector, EN37.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between the H02S electrical connector EN37, pin 2 (WG) and GROUND.

- Is the voltage less than 10 volts?

-> Yes

-> No

G92429t30 : CHECK THE GROUND CIRCUIT TO THE RIGHT-HAND BANK H02S HEATER FOR OPEN CIRCUIT
1. Turn the ignition switch to the OFF position.
2. Disconnect the ECM electrical connector EN16.
3. Measure the resistance between the H02S electrical connector EN37, pin 1 (RU) and the ECM electrical connector EN16, pin 1 and pin 2 (RU).

- Is the resistance of each wire less than 5 ohms?

-> Yes

-> No
REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.

G92429I31 : CHECK THE RIGHT-HAND BANK H02S GROUND CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between the bank 1 H02S electrical connector EN37, pin 1 (RU) and GROUND.

- Is the resistance less than 10,000 ohms?

-> Yes
REPAIR the short to GROUND. CLEAR the DTCs. TEST the system for normal operation.

-> No

G92429t195 : CHECK THE RIGHT-HAND BANK H02S GROUND CIRCUIT FOR SHORT TO BATTERY
1. Check for a voltage between the H02S electrical connector EN37, pin 1 (RU) and GROUND.

- Is the voltage greater than 1 volt?

-> Yes
REPAIR the short to battery. CLEAR the DTCs. TEST the system for normal operation.

-> No
INSTALL a new H02S. CLEAR the DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new ECM. Before replacing an ECM, contact dealer technical support.

G92429t32 : CHECK FUSE 38 OF THE ENGINE COMPARTMENT FUSE BOX
1. Check the fuse.

- Is the fuse OK?

-> Yes

-> No

G92429t33 : CHECK FUSE 38 OF THE ENGINE COMPARTMENT FUSE BOX FORA SHORT TO GROUND
1. Measure the resistance between electrical connector JB34 pin 97 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 right-hand bank H02S. CLEAR the DTC. TEST the system for normal operation.

-> No
INSTALL a new fuse. CLEAR the DTC. TEST the system for normal operation.

G92429t34 : CHECK THE POWER SUPPLY TO FUSE 38 IN THE ENGINE COMPARTMENT FUSE BOX
1. Turn the ignition switch to the ON position.
2. Measure the voltage between electrical connector JB34 pin 131 and GROUND.

- Is the voltage less than 10 volts?

-> Yes
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.

-> No
Repair the circuit from the ECM control relay to the engine compartment fuse box. CLEAR the DTC. TEST the system for normal operation.