Honda NSX-T 1998 Manual page 588

Main Menu
PGM-FI System
Engine Control Module (ECM) (cont'd)
The Malfunction Indicator Lamp
(MIL) stays on or comes on after
two seconds.
Check the Diagnostic Trouble
Code (DTC):
1. Connect a scan tool or Honda
PGM Tester.
2. Turn the ignition switch ON (II).
3. Read the DTC with the scan
tool or Honda PGM Tester.
Are any DTC(s) indicated?
Check the DTC by MIL indication:
1. Turn the ignition switch OFF.
2. Connect the SCS service con-
nector to the service check
connector.
3. Turn the ignition switch ON (II).
Does the MIL indicate any DTC?
Try to start the engine.
Does the engine start?
Check for a short in the wire
(SCS line):
1. Stop the engine and turn the
ignition switch ON (II).
2. Measure voltage between the
ECM connector terminal C5
and body ground.
Is there approx. 5 V?
(To page 11-63)
Table of Contents
NOTE:
• When there is no Diagnostic Trouble Code (DTC) stored, the MIL will stay on if the SCS service
connector is connected and the ignition switch is on.
• If this symptom is intermittent, check for:
— A loose ACG(S) (20 A) fuse in the engine compartment fuse/relay box
— A loose No. 2 FUEL PUMP SRS2 (15 A) fuse in the under-dash fuse box
— An intermittent short in the wire between the ECM (C5) and the service check connector
— An intermittent open in the wires between the ECM (A26, B14) and the service check con-
nector
— An intermittent short in the wire between the ECM (A7) and the gauge assembly
— An intermittent short in the wire between the ECM (F1) and the MAP sensor, accelerator posi-
tion sensor
— An intermittent short in the wire between the ECM (D10) and the TP sensor, EGR valve lift
sensor
— An intermittent short in the wire between the ECM (F14) and accelerator position sensor
• See the OBD II scan tool or Honda PGM Tester user's manuals for specific operating instruc-
tions.
Go to troubleshooting proce-
dures, (see page 11-38)
— Repair open or short in wire
between the ECM (D4) and
Data Link Connector.
— Go to troubleshooting proce-
dures, (see page 11-38)
(To page 11-63)
Repair short to body ground in
the wire between ECM (C5) and
service check connector.