PINPOINT TEST G542831P16

PINPOINT TEST G542831p16 : RIGHT-HAND KNOCK SENSOR (KS) HIGH/LOW VOLTAGE

G542831t56 : CHECK KS SENSING CIRCUIT FOR HIGH RESISTANCE
1. Disconnect the KS electrical connector, PI19.
2. Disconnect the ECM electrical connector, PI300.
3. Measure the resistance between:

KS connector PI19, ECM connector PI300,
harness side harness side
Pin 04 Pin 42

- 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 G542831t57.

G542831t57 : CHECK KS SENSING CIRCUIT FOR SHORT CIRCUIT TO POWER
1. Key on, engine off.
2. Measure the voltage between:

KS connector PI19, Battery
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 G542831t58.

G542831t58 : CHECK KS SENSING CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Key off.
2. Measure the resistance between:

KS connector PI19, Battery
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 G542831t59.

G542831t59 : CHECK KS GROUND CIRCUIT FOR HIGH RESISTANCE
1. Measure the resistance between:

KS connector PI19, ECM connector PI300,
harness side harness side
Pin 03 Pin 19

- 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 KS. CLEAR the DTC. TEST the system for normal operation.