Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 218

Code No. 56 N range lamp system
If the N range signal is off after an N range lamp illumination instruction (ON instruction)
has been given, it is judged that there is a short-circuit in the N range lamp earth
and diagnosis code No. 56 is output.
Check the N range lamp bulb
(Refer to GROUP 52A - Instrument Panel.)*
Check the following connectors:
<4G6-MPI> B-01, B-14, A-89, B-110
<4G6-GDI> B-01, B-14, A-89, B-10
Harness check
D Between N range lamp bulb and engine-A/T-ECU or A/T-ECU
Check the trouble symptoms.
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptom
MUT-II can not communicate with any systems.
MUT-II can not communicate with the engine-A/T-ECU or A/T-ECU.
Driving impossible
Malfunction when starting
Malfunction when shifting
NOTE
*: Refer to '99 SPACE RUNNER/SPACE WAGON Workshop Manual (Pub. No. PWDE9803).
AUTOMATIC TRANSMISSION -
OK
OK
OK
Starting impossible
Does not move forward
Does not reverse
Does not move (forward or reverse)
Engine stalling when shifting
Shocks when changing from N to D and large time lag
Shocks when changing from N to R and large time lag
Shocks when changing from N to D, N to R and large
time lag
Shocks and running up
Troubleshooting
Probable cause
D Malfunction of the N range lamp bulb
D Malfunction of connector
D Malfunction of the engine-A/T-ECU <4G6-MPI>
D Malfunction of the A/T-ECU <4G6-GDI>
NG
Replace
NG
Repair
NG
Repair
NG
Replace the engine-A/T-ECU or A/T-ECU.
23-11
Inspection Reference
procedure No. page
1 23-12
2 23-13
3 23-27*
4 23-27*
5 23-28*
6 23-28*
7 23-29*
8 23-29*
9 23-30*
10 23-31*
11 23-31*