TEST
ACTION
APPLICABILITY
4
With the DRB, monitor Vehicle Speed in the PCM Sensor Display menu.
Test drive the vehicle and observe the Vehicle Speed on the DRB.
Compare the DRB reading with the vehicle’s Speedometer.
Are the readings within 5 km/h (3 MPH) of each other?
All
Yes
→
The Speedometer System is working properly.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
5
5
With the DRB, select BODY from the Systems menu, ELECTRO/MECH INSTRU-
MENT CLUSTER, MONITOR DISPLAY, then CCD BUS ENGINE INFO.
Monitor Vehicle Speed while driving the vehicle.
Does the Vehicle Speed Sensor reading increase with vehicle speed?
All
Yes
→
Replace the Instrument Cluster in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
6
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Check connectors - Clean/repair as necessary
Turn the ignition on.
Measure the voltage of the 5-volt Supply circuit in the Vehicle Speed Sensor harness
connector.
Is the voltage above 4.5 volts?
All
Yes
→
Go To
7
No
→
Go To
12
7
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the PCM harness connectors.
Turn the ignition on.
Disconnect the Vehicle Speed Sensor harness connector.
Measure the voltage between ground and Vehicle Speed Sensor harness connector
cavities 1, 2, and 3.
Is the voltage below 1.0 volt on each circuit?
All
Yes
→
Go To
8
No
→
Repair the circuit that measured above 1.0 volt for a short to
voltage.
Perform ROAD TEST VERIFICATION - VER-2.
200
DRIVEABILITY - DIESEL
*CHECKING THE SPEEDOMETER OPERATION —
Continued