Notes On Intermittents

DO NOT attempt to diagnose code "EO53" unless there are complaints of stumble, stall, miss or other driveability conditions that could be caused by loss of spark or fuel. Code "EO53" can be caused by:

• Loss of ground on circuit No. 453.
• Loss of distributor reference signal on circuit No. 430.
• Loss of battery power to "B+" terminal of distributor.
• Ignition switch contact timing.

Fig 1: Trouble Code E053 - Distributor Signal Interrupt

Fig 2: Trouble Code E053 - Distributor Signal Interrupt

Fig 3: Schematic for Hard Trouble Code E053