Mil Circuit Troubleshooting - Acura 3.5 RL Manual

MIL Circuit Troubleshooting

Turn the ignition switch ON (II)
and watch the Malfunction
Indicator Lamp (MIL).
Does the MIL come on and
stay on?
Check the fuse:
1. Turn the ignition switch OFF.
2. Turn the ignition switch ON (II).
Does the low oil pressure
indicator light come on?
YES
Check the engine starting:
Try to start the engine.
Does the engine start?
NO
(To page 11-64)
*: '00 - 01 models
NOTE:
If this symptom is intermittent, check for the following problems.
• The MIL never comes on after the ignition switch is turned ON (II).
— A loose No. 6 ECU (PCM) (20 A) fuse in the under-dash fuse/relay box
— A loose No. 22 FUEL PUMP (20 A) fuse in the under-dash fuse/relay box
— An intermittent short in the wire between the PCM (A7) and the gauge assembly
— An intermittent short in the wire between the PCM (D10) and the MAP sensor
— An intermittent short in the wire between the PCM (D21) and the TP sensor, EGR
valve position sensor, fuel tank pressure sensor, TCS control valve angle sensor (with
TCS, VSA*)
— A loose No. 25 IG COIL (30 A) fuse in the under-dash fuse/relay box
— PGM-FI main relay
• The MIL stays on or comes on after 2 seconds with the ignition switch turned ON (II).
— An intermittent short in the wire between the PCM (C5) and the service check con-
nector, data link connector*
— An intermittent open in the wires between the PCM (D22) and the service check connec-
tor
— An intermittent short in the wire between the PCM (A7) and the gauge assembly.
• See the OBDII scan tool or Honda PGM Tester user's manuals for specific operating
instructions.
*: '00 - 01 models
YES
(To page 11-66)
Repair short or open in the
wire between No. 20 ECU
NO
(PCM) (20 A) fuse and gauge
assembly.
Replace No. 20 ECU (PCM) (20
A) fuse.
YES
(To page 11-68)