Es

HINT:

• If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical systems.

• Check the engine speed. The engine speed can be checked by using an intelligent tester. To check, follow the operation below:

(a) Connect an intelligent tester to the DLC3.

(b) Start the engine.

(d) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / ENGINE SPD.

The engine speed may be indicated as zero despite the engine revolving normally. This is caused by a lack of NE signals from the Crankshaft Position (CKP) sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed, if the CKP sensor voltage output is insufficient.

• Read freeze frame data using an intelligent tester. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

Component Side:

Crankshaft Position Sensor a

2

- 1

00

(a) Disconnect the C5 Crankshaft Position (CKP) sensor connector.

(b) Measure the resistance between terminals 1 and 2. Standard Resistance

Tester Connections

Specified Conditions

1 - 2

1,630 to 2,740 n at cold

1 - 2

2,065 to 3,225 n at hot

HINT:

Terms cold and hot refer to the temperature of the coils. Cold means approximately -10° to 50°C (14°to 122°F). Hot means approximately 50° to 100°C (122° to 212°F). Reconnect the CKP sensor connector.

REPLACE CRANKSHAFT POSITION SENSOR

CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

Wire Harness Side:

Crankshaft Position Sensor Connector ©

Front View ECM Connector

Front View ECM Connector

(a) Disconnect the C5 CKP sensor connector.

(b) Disconnect the E4 ECM connector.

(c) Check the resistance.

Standard Resistance (Check for open)

Tester Connections

Specified Conditions

NE+ (C5-1) - NE+ (E4-27)

Below 1 Q

NE- (C5-2) - NE- (E4-34)

Below 1 Q

Standard Resistance (Check for short)

Tester Connections

Specified Conditions

NE+ (C5-1) or NE+ (E4-27) - Body ground

10 kn or higher

NE- (C5-2) or NE- (E4-34) - Body ground

10 kn or higher

(d) Reconnect the ECM connector.

(e) Reconnect the CKP sensor connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION)

(a) Check the CKP sensor installation. OK:

Sensor is installed correctly.

SECURELY REINSTALL SENSOR

CHECK CRANKSHAFT TIMING PULLEY (TEETH OF PLATE)

(a) Check the teeth of the sensor plate. OK:

Sensor plate does not have any cracks or deformation.

REPLACE CRANKSHAFT POSITION SENSOR PLATE

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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