Displaying & Reading Trouble Codes

READING DIAGNOSTIC CODES




1. TURN IGNITION SWITCH AND OD SWITCH TO ON
Do not start engine.

NOTE: Warning and diagnostic code can be read only when the overdrive switch is ON. If OFF the overdrive light will light continuously and will not blink.




2. SHORT DG TERMINAL CIRCUIT
Using a service wire, short the terminals ECT AND E(1).




3. READ DIAGNOSTIC CODE
Read the diagnostic code as indicated by the number of times the OD "OFF" light flashes.

4. DIAGNOSTIC CODE




a. If the system is operating normally, the light will blink for 0.25 seconds every 0.5 seconds.




b. In the event of a malfunction, the light will blink for 0.5 seconds every 1.0 seconds. The number of blinks will equal the first number and, after 1.5 second pause, the second number of the two digit diagnostic code. If there are two or more codes, there will be a 2.5 second pause between each.

NOTE: In the event of several trouble codes occuring simultaneously, indication will begin from the smaller value and continue to the larger.

c. Remove the service wire from the DG terminal.