PINPOINT TEST G531332p16

Pinpoint Tests

PINPOINT TEST G531332p16 : LEFT-HAND KNOCK SENSOR (KS) HIGH/LOW VOLTAGE

G531332t57 : CHECK KS SENSING CIRCUIT FOR HIGH RESISTANCE
1. Key off.
2. Disconnect the KS electrical connector, PI19.
3. Disconnect the ECM electrical connector, PI300.
4. Measure the resistance between:

KS connector PI19, ECM connector PI300,
harness side harness side
Pin 02 Pin 43

- 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 G531332t58.

G531332t58 : 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 02 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 G531332t59.

G531332t59 : CHECK KS SENSING CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Key off.
2. Measure the resistance between:

KS connector PI19, Battery
harness side
Pin 02 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 G531332t60.

G531332t60 : CHECK KS GROUND CIRCUIT FOR HIGH RESISTANCE
1. Measure the resistance between:

KS connector PI19, ECM connector PI300,
harness side harness side
Pin 01 Pin 20

- 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.