P0052

O : DTC P0052. LEFT-HAND BANK H02S HEATER

G92429t90 : CHECK THE POWER SUPPLY CIRCUIT TO THE LEFT-HAND BANK H02S HEATER
1. Turn the ignition switch to the ON position.
2. Measure the voltage between the H02S electrical connector EN32 pin 2 (WR) and GROUND.

- Is the voltage less than 10 volts?

-> Yes

-> No

G92429t91 : CHECK THE GROUND CIRCUIT TO THE LEFT-HAND BANK H02S HEATER
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 EN32 pin 1 (GO) and the ECM electrical connector EN16 pins 55 and 56 (GO).

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

-> Yes

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

G92429t92 : CHECK THE LEFT-HAND BANK H02S CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between the H02S electrical connector EN32 pin 1 (GO) 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
INSTALL a new left-hand bank H02S. CLEAR DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new ECM. Before replacing an ECM, contact dealer technical support.

G92429t93 : CHECK FUSE 42 OF THE ENGINE COMPARTMENT FUSE BOX
1. Check the fuse.

- Is the fuse OK?

-> Yes

-> No

G92429t94 : CHECK FUSE 42 OF THE ENGINE COMPARTMENT FUSE BOX FOR A SHORT TO GROUND
1. Measure the resistance between electrical connector JB34 pin 105 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 left-hand bank H02S. CLEAR the DTC. TEST the system for normal operation.

-> No
INSTALL a new fuse. Check the circuit for cause of fuse failure. CLEAR the DTC. TEST the system for normal operation.

G92429t95 : CHECK THE POWER SUPPLY TO FUSE 42 IN THE ENGINE COMPARTMENT FUSE BOX
1. Measure the voltage between fuse 42, electrical connector JB34 pin 105 and GROUND.

- Is the voltage less than 10 volts?

-> Yes
Repair the circuit from the ECM control relay to the engine compartment fuse box. CLEAR the DTC. TEST the system for normal operation.

-> No
Repair the circuit between the engine compartment fuse box and the H02S. CLEAR the DTC. TEST the system for normal operation.