P0057

L : DTC P0057. LEFT-HAND BANK CATALYST MONITOR

G92429t69 : CHECK THE POWER SUPPLY CIRCUIT TO THE LEFT-HAND BANK CATALYST MONITOR HEATER
1. Turn the ignition switch to the OFF position.
2. Disconnect the catalyst monitor sensor electrical connector EN9.
3. Turn the ignition switch to the ON position.
4. Measure the voltage between the catalyst monitor sensor electrical connector EN9 pin 2 (WR) and GROUND.

- Is the voltage less than 10 volts?

-> Yes

-> No

G92429t70 : CHECK CONTINUITY OF THE LEFT-HAND BANK CATALYST MONITOR SENSOR GROUND CIRCUIT
1. Turn the ignition switch to the OFF position.
2. Disconnect the ECM electrical connector EN16.
3. Measure the resistance between the catalyst monitor sensor electrical connector EN9 pin 3 (W) and EN16, pin 130.

- Is the resistance less than 5 ohms?

-> Yes

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

G92429t71 : CHECK CONTINUITY OF THE POWER SUPPLY WIRE TO THE LEFT- HAND BANK CATALYST MONITOR SENSOR
1. Measure the resistance between the catalyst monitor sensor electrical connector EN9 pin 4 (N) and the ECM electrical connector EN16 pin 129 (N).

- Is the resistance less than 5 ohms?

-> Yes

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

G92429t72 : CHECK THE LEFT-HAND BANK CATALYST MONITOR SENSOR POWER SUPPLY WIRE FOR A SHORT TO GROUND
1. Measure the resistance between the catalyst monitor sensor electrical connector EN9 pin 4 (N) 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

G92429t73 : CHECK THE LEFT-HAND BANK CATALYST MONITOR SENSOR POWER SUPPLY WIRE FOR A SHORT TO BATTERY
1. Measure the voltage between the catalyst monitor sensor electrical connector EN9 pin 4 (N) 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 left-hand bank catalyst monitor sensor. 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.

G92429t74 : CHECK THE LEFT-HAND BANK CATALYST MONITOR SENSOR POWER SUPPLY CIRCUIT
1. Measure the voltage between the catalyst monitor sensor electrical connector EN9 pin 2 (WR) and GROUND.

- Is the voltage less than 10 volts?

-> Yes

-> No

G92429t75 : CHECK CONTINUITY OF THE LEFT-HAND BANK CATALYST MONITOR SENSOR HEATER GROUND CIRCUIT
1. Turn the ignition switch to the OFF position.
2. Disconnect the ECM electrical connector EN16.
3. Measure the resistance between the catalyst monitor sensor electrical connector EN9 pin 1 (UY) and the ECM electrical connector EN16 pin 93 (UY).

- Is the resistance less than 5 ohms?

-> Yes
INSTALL a new ECM. Before replacing an ECM, contact dealer technical support.

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

G92429t76 : CHECK FUSE 42 OF THE ENGINE COMPARTMENT FUSE BOX
1. Check the fuse.

- Is the fuse OK?

-> Yes

-> No

G92429t77 : 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.

G92429t78 : 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.