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TM9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
FLASH CODE:
32
DDR DISPLAY
STOP ENGINE LIGHT SHORT TO BATTERY (+)
SAE J1587 CODE:
SID: 238 FMI: 3
Indicates that the Stop Engine Light (SEL) circuit is shorted to battery (+). This diagnostic condition is detected
when the DDEC III ECM is unsuccessful in turning ON the stop engine light. This diagnostic code is typically:
(1) failed short SEL light bulb
(2) SEL wire in vehicle harness is shorted to battery (+)
NOTE: The DDEC III ECM supplies a switched ground to the stop engine light circuit to turn ON the light.
FLASH CODE:
32
DDR DISPLAY
STOP ENGINE LIGHT OPEN CIRCUIT
SAE J1587 CODE:
SID: 238 FMI: 4
Indicates that the Stop Engine Light (SEL) circuit is open or shorted to ground. This diagnostic condition is de-
tected when the stop engine light is OFF and the DDEC Ill ECM measures a low voltage on the stop engine light
circuit output. This diagnostic code is typically:
(1) failed open SEL light bulb
(2) SEL wire in vehicle harness is open or shorted to ground
FLASH CODE:
32
DDR DISPLAY
CHECK ENGINE LIGHT SHORT TO BATTERY (+)
SAE J1587 CODE:
SID: 239 FMI: 3
Indicates that the Check Engine Light (CEL) circuit is shorted to battery (+). This diagnostic condition is detected
when the DDEC III ECM is unsuccessful in turning ON the stop engine light, This diagnostic code is typically:
(1) Failed short CEL light bulb
(2) CEL wire in vehicle harness is shorted to battery (+)
NOTE: The DDEC III ECM supplies a switched ground to the check engine light circuit to turn ON the light.
FLASH CODE:
DDR DISPLAY
SAE J1587 CODE:
32
CHECK ENGINE LIGHT OPEN CIRCUIT
SID: 239 FMI: 4
Indicates that the Check Engine Light (CEL) circuit is open or shorted to ground. This diagnostic condition is de-
tected when the check engine light is OFF and the DDEC III ECM measures a low voltage on the check engine
light circuit output. This diagnostic code is typically:
(1) failed open CEL light bulb
(2) CEL wire in vehicle is open or shorted to ground
H-18
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