Code 33: Vehicle Speed Sensor

NOTE: Refer to illustration for ECU connector and terminal identification. See Figure .

Raise and support vehicle. Turn ignition on. Rotate drive wheel by hand and backprobe ECU connector F120 and measure voltage between ground and terminal No. 4 of ECU. If voltage does not fluctuate between zero and 2.5 volts 4 times per revolution, go to next step. If voltage fluctuates between zero and 2.5 volts, check for poor ECU connector contact. Repair connector and/or wiring harness as necessary. If connector and wiring harness are okay, replace ECU.
Turn ignition off. Disconnect ECU and instrument cluster connectors. Measure resistance of Light Green/Black wire between ECU connector F120, terminal No. 4 and instrument cluster connector. If resistance is less than one ohm, go to next step. If resistance is more than one ohm, repair connector and/or wiring harness.

Measure resistance between ECU and instrument cluster connectors. See VEHICLE SPEED SENSOR RESISTANCE SPECIFICATIONS table. If resistance is as specified, go to next step. If resistance is not as specified, repair connector and/or wiring harness as necessary.

VEHICLE SPEED SENSOR RESISTANCE SPECIFICATIONS

Measure Between Terminals

Ohms

No. 1 ⁽¹⁾ & Ground

Less Than 10

No. 4 ⁽²⁾ & Ground

Infinite

No. 10 ⁽²⁾ & Ground

Less Than 10

⁽³⁾

Less Than 10

⁽¹⁾	Measure at ECU connector F119.

⁽²⁾	Measure at ECU connector F120.

⁽³⁾	Measure resistance of Black wire between ground and instrument cluster connector.

Remove instrument cluster. Rotate drive wheel of vehicle and measure resistance between Black wire and Light Green/Black wire terminals at instrument cluster connector. If resistance does not fluctuate, replace vehicle speed sensor. If resistance fluctuates, check for poor ECU connector contact. Repair connector and/or wiring harness as necessary. If connector and wiring harness are okay, replace ECU.