CHART - 5 - "CHECK ENGINE" LIGHT ON AND NO ACTIVE CODE ON DDR (Cont'd)

TM 9-2320-364-20-1

Section IV. TROUBLESHOOTING CHARTS (Cont.)

D. CHART - 5 - "CHECK ENGINE" LIGHT ON AND NO ACTIVE CODE ON DDR (Cont'd)

STEP/SEQUENCE

RESULT

WHAT TO DO NEXT

C 5-5

Check ECM

Connectors

Turn ignition off.

Terminals

Replace ECM (para 7-57).

Check terminals at vehicle

and connectors

Then to go C 5-30.

harness connectors (both ECM

are okay.

and harness side) for damage;

bent, corroded and unseated pins

Problem found.

Repair terminals/connectors

or sockets.

(para 7-101). Then go to C 5-30.

Check terminals in connector to

be sure B1 is wire #419 and B3

is wire #439.

C 5-30

Verify Repairs

Turn ignition off.

"Check Engine"

Repairs are complete.

Reconnect all connectors.

light comes

Turn ignition on.

on for up to

Clear codes.

5 seconds,

Turn ignition off.

then goes out.

Turn ignition on while at same

time observing "Check Engine"

"Check Engine"

Go to C 4--1.

light.

light does not

If "Check Engine" light stays on,

come on at all.

read inactive code.

No active codes and

All system diagnostics are

"Check Engine"

complete. Please review this

light comes on

section from first step to find

and stays on.

the error.

Fault codes

Go to START-1, pg 2-539 to

present.

service other codes.

2-587