87 928 car wil not start
#2
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Since the rule is to first suspect what you last did, check, in order:
Check for 12vdc at the main power connectors on the top of the panel.
Check Plug A and make sure that it is fully seated.
Pull Relay XIV (Start Relay) and check for 12vdc on Terminal 30. If there is power, touch a jumper from Terminal 30 to Terminal 87. If the starter spins, the yellow wire to the starter is OK. If the starter doesn't spin, Check Plug Q to ensure that it is fully seated. Then check the yellow wire at the 14-pin connector near the jump start terminal on the right fender panel.
Check for 12vdc at the main power connectors on the top of the panel.
Check Plug A and make sure that it is fully seated.
Pull Relay XIV (Start Relay) and check for 12vdc on Terminal 30. If there is power, touch a jumper from Terminal 30 to Terminal 87. If the starter spins, the yellow wire to the starter is OK. If the starter doesn't spin, Check Plug Q to ensure that it is fully seated. Then check the yellow wire at the 14-pin connector near the jump start terminal on the right fender panel.