nsxd11098a.pdf

Idle Control System
Troubleshooting Flowchart Clutch Switch Signal (M/T)
This signals the ECM when the clutch is engaged.
Inspection of clutch switch
signal.
Connect the test harness be-
tween the ECM and connectors
(see page 11-37).
Turn the ignition switch ON.
Measure voltage between C7 (+)
terminal and A26 (-) terminal.
Is voltage less than 1.0 V?
Depress the clutch pedal.
Measure voltage between C7 (+)
terminal and A26 (-) terminal.
(To page 11-99)
Turn the ignition switch OFF.
Disconnect the 3P connector
from the clutch switch.
Check for continuity between
the A terminal and C terminal on
the clutch switch.
Does continuity exist?
Turn the ignition switch ON.
Measure voltage between PNK
(+) terminal and body ground.
Is there approx. 10 V?
Repair open in BLK wire be-
tween the clutch switch and
G401 (located behind left kick
panel).
Replace the clutch
switch.
Repair open in PNK
wire between ECM
(C7) and the clutch
switch.

(From page 11-98)
Is there approx. 10 V?
Clutch switch signal is OK.
Turn the ignition switch OFF.
Disconnect the 3P connector
from the clutch switch.
Turn the ignition switch ON.
Measure voltage between C7 (+)
terminal and A26 (-) terminal
with the clutch pedal depressed.
Is there approx. 10 V?
Turn the ignition switch OFF.
Disconnect “C” connector from
engine wire harness only, not the
ECM.
Turn the ignition switch ON.
Is there approx. 10 V?
Substitute a known-good ECM
and recheck. If prescribed
voltage is now available, replace
the original ECM.
Replace the clutch
switch.
Repair short in PNK
wire between ECM
(C7) and the clutch
switch.