Service manual

EDI DIAGNOSIS
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 5E-55
TEST DESCRIPTION
Verify continuity between the following:
ECM 68 PIN CONNECTOR
GLOW PLUG BULB SOCKET WIRE AT
DASH PANEL
3 BLK/YEL
Verify supply voltage from key switch terminal 15 with key ON. Measure:
CURRENT (VOLTS)
GLOW PLUG BULB SOCKET WIRE AT
DASH PANEL
12 PNK
DIAGNOSTIC HELP:
Verify the following:
• Open or short in wiring between instrument panel and ECM.
• Improper terminals or pins at the electrical box harness connectors or ECM.
• Defective bulb.
• Defective bulb socket.
• Defective ECM.
Failure of the Glow Plug Lamp circuit does not influence engine performance.