PINPOINT TEST G531332P8

Pinpoint Tests

PINPOINT TEST G531332p8 : RIGHT-HAND CATALYST MONITOR SENSOR SENSING CIRCUIT LOW/HIGH VOLTAGE, NO ACTIVITY

G531332t27 : CHECK THE CATALYST MONITOR SENSOR SENSING CIRCUIT FOR HIGH RESISTANCE
1. Key off.
2. Disconnect the catalyst monitor sensor electrical connector, PI11.
3. Disconnect the ECM electrical connector, PI300.
4. Measure the resistance between:

Catalyst monitor sensor ECM connector PI300,
connector PI11, harness side harness side
Pin 04 Pin 40

- Is the resistance greater than 5 Ohms?

->YES
REPAIR the high resistance circuit. CLEAR the DTC. TEST the system for normal operation.

->NO
GO to Pinpoint Test G531332t28.

G531332t28 : CHECK THE CATALYST MONITOR SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT TO POWER
1. Key on, engine off.
2. Measure the voltage between:

Catalyst monitor sensor Battery
connector PI11, harness side
Pin 04 Negative terminal

- Is the voltage greater than 3 volts?

->YES
REPAIR the short circuit. CLEAR the DTC. TEST the system for normal operation.

->NO
GO to Pinpoint Test G531332t29.

G531332t29 : CHECK THE CATALYST MONITOR SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Key off.
2. Measure the resistance between:

Catalyst monitor sensor Battery
connector PI11, harness side
Pin 04 Negative terminal

- Is the resistance less than 10,000 Ohms?

->YES
REPAIR the short circuit. CLEAR the DTC. TEST the system for normal operation.

->NO
GO to Pinpoint Test G531332t30.

G531332t30 : CHECK THE CATALYST MONITOR SENSOR GROUND CIRCUIT FOR HIGH RESISTANCE
1. Measure the resistance between:

Catalyst monitor sensor ECM connector PI300,
connector PI11, harness side harness side
Pin 03 Pin 22

- Is the resistance greater than 5 Ohms?

->YES
REPAIR the high resistance circuit. CLEAR the DTC. TEST the system for normal operation.

->NO
INSTALL a new catalyst monitor sensor. CLEAR the DTC. TEST the system for normal operation.