TEST
ACTION
APPLICABILITY
7
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance between the Vehicle Speed Sensor Signal circuit and the
Sensor Ground circuit.
Is the resistance above 1000 ohms?
All
Yes
→ Replace and program the ECM in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Repair the Vehicle Speed Sensor Signal circuit for a short to the
Sensor Ground circuit.
Perform ROAD TEST VERIFICATION - VER-2.
8
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Turn the ignition on.
Measure the voltage of the Sensor Reference Voltage B circuit.
Choose the voltage range in which the Sensor Reference Voltage B circuit measured.
All
Below 4.5 volts
Go To
9
Between 4.5 and 5.5 volts
Go To
12
Above 5.5 volts
Go To
15
9
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Measure the resistance of the Sensor Reference Voltage B circuit.
Is the resistance below 10.0 ohms?
All
Yes
→ Go To 10
No
→ Repair the Sensor Reference Voltage B circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
10
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Measure the resistance between ground and the Sensor Reference Voltage B circuit.
Is the resistance above 1000 ohms?
All
Yes
→ Go To 11
No
→ Repair the Sensor Reference Voltage B circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
240
DRIVEABILITY - DIESEL
*CHECKING THE VEHICLE SPEED SIGNAL —
Continued