Test Description

Number(s) below refer to the step number(s) on the diagnostic procedures:

1. 1
   
   The MIL should be ON steady with the ignition ON and the engine OFF. If not, the NO MIL diagnostic procedures should be used to isolate the malfunction. See NO MALFUNCTION INDICATOR LIGHT (CHECK ENGINE LIGHT)  under SYSTEM TESTS.
2. 2
   
   The Reduced Power lamp (RPL) should be ON steady with the ignition ON and the engine OFF. If not, the NO RPL diagnostic procedures should be used to isolate the malfunction. See NO REDUCED POWER LAMP .
3. 3
   
   Checks the Class 2 data circuit and ensures that the PCM is able to transmit serial data.
4. 4
   
   This test ensures that the PCM is capable of controlling the MIL and the MIL driver circuit is not shorted to ground.
5. 5
   
   This test ensures that the PCM is capable of controlling the Reduced Power lamp (RPL) and the RPL driver circuit is not shorted to ground.
6. 7
   
   This test checks for DTCs (system, voltage supply circuit).
7. 8
   
   This test checks for DTCs (PCM software; detect errors).
8. 10
   
   If the starter motor will not start, the starter control system chart should be used to diagnose the condition.
9. 11
   
   If the engine will not start, the CRANKS BUT WILL NOT RUN diagnostic procedures should be used to diagnose the condition. See NO START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES article..
10. 14
    
    A Tech 2 parameter which is not within the typical range may help to isolate the area which is causing the problem.
11. 15
    
    This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is replaced, the new PCM must be programmed.