Diagnostic Test

CHECK IF THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, read Electric Vehicle Control Unit (EVCU) DTCs.
  Is the status for this DTC Active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
CHECK THE ASD RELAY
1. Turn the ignition off. Remove the key from the Ignition Switch, close doors and allow the EVCU to shut down.
  NOTE:
  Allow up to two minutes for the EVCU to shut down. Opening the vehicle door will interrupt the shut down process.
2. Install a known good substitute relay in place of the ASD relay.
3. Turn the ignition on.
4. With the scan tool, erase Electric Vehicle Control Unit EVCU DTCs.
5. Turn the ignition off. Remove the key from the Ignition Switch, close doors and allow the EVCU to shut down.
6. Turn the ignition on.
7. With the scan tool, read EVCU DTCs.
  Does this DTC reset?
  
  Yes
  - Go To 3
  No
  - Replace the ASD Relay.
  - Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (F342) ASD RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off. Remove the key from the Ignition Switch, close doors and allow the EVCU to shut down.
2. Remove the substitute ASD Relay.
3. Disconnect the EVCU C1 harness connector.
4. Turn the ignition on.
5. Measure the voltage of the (F342) ASD Relay Control circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (F342) ASD Relay Control circuit for a short to voltage.
  - Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
CHECK THE (F342) ASD RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off. Remove the key from the Ignition Switch, close doors and allow the EVCU to shut down.
2. Measure the resistance between ground the (F342) ASD Relay Control circuit.
  Is the resistance below 100K Ohms?
  
  Yes
  - Repair the (F342) ASD Relay Control circuit for a short to ground.
  - Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
CHECK THE (F342) ASD RELAY CONTROL CIRCUIT FOR AN OPEN
1. Measure the resistance of the (F342) ASD Relay Control circuit between the EVCU C1 harness connector and the ASD Relay connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 6
  No
  - Repair the (F342) ASD Relay Control circuit for an open or high resistance.
  - Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (A116) FUSED B(+) CIRCUITS
1. Turn the ignition on
2. Using a 12-volt test light connected to ground, check both the Fused B(+) circuits in the ASD Relay connector and the EVCU C1 harness connector.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly for all circuits?
  
  Yes
  - Repair the Fused B(+) circuit(s) for an open or high resistance.
    NOTE:
    If the fuse is open, make sure to check for a short to ground.
  - Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 7
CHECK THE (F811) ASD RELAY OUTPUT CIRCUITS FOR AN OPEN
1. Connect a fused jumper wire between the (A116) Fused B(+) and the (F811) ASD Relay Output circuit in the ASD Relay connector.
2. Using a 12-volt test light connected to ground, check the (F811) ASD Relay Output circuits at the EVCU C1 harness connector.
  Does the test light illuminate brightly for all the (F811) ASD Relay Output circuits?
  
  Yes
  - Go To 8
  No
  - Repair the (F811) ASD Relay Output circuit(s) for an open or high resistance.
  - Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
ELECTRIC VEHICLE CONTROL UNIT (EVCU)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the ASD Relay and the Electric Vehicle Control Unit (EVCU).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Perform any Technical Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace and program the Electric Vehicle Control Module (EVCU) in accordance with the Service Information. Refer to UNIT, ELECTRIC VEHICLE CONTROL (EVCU), REMOVAL .
  - Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .