Control Circuit Testing

The starter control circuit components should be tested in the order in which they are listed, as follows:

• Starter Relay  - The starter relay is located within the PDC. Refer to DIAGNOSIS AND TESTING .
• Starter Solenoid  - Refer to Starter Motor DIAGNOSIS AND TESTING  .
• Ignition Switch  - Refer to Ignition Switch and Key Lock Cylinder 
• Park/Neutral Position Switch  - Refer to Park/Neutral Position Switch  in 948TE/9HP48 AUTOMATIC TRANSMISSION (SERVICE INFORMATION) .
• Wire harnesses and connections  - Refer to appropriate SYSTEM WIRING DIAGRAMS article .