Signal.
This signals the ECM when the transmission is in position.
Automatic Transaxle (A/T) Gear Position Signal
Check the operation of the A/T
gear position switch:
1. Turn the ignition switch ON (II).
2. Observe the A/T shift position
indicator and select each posi-
tion separately.
Does the indicator light prop-
erly?
See the A/T gear position indica-
tor inspection (see section 14).
ECM CONNECTORS
WIRE SIDE OF FEMALE TERMINALS
Check for a short in the wire:
1. Turn the ignition switch OFF.
2. Disconnect the ECM connector
B (16P) from the ECM.
3. Check for continuity between
ECM connector terminal B4
and body ground.
Is there approx. 5 V?
Check for a short in the circuit:
1. Turn the ignition switch OFF.
2. Disconnect the 30P (C412)
connector from the gauge
assembly.
3. Disconnect the 26P connector
from the TCM.
4. Turn the ignition switch ON (II).
5. Measure voltage between
ECM connector terminals B4
and A26.
Is there continuity?
Repair short in the wire between
the ECM (B4) and the gauge
assembly.
Substitute a known-good ECM
and recheck. If prescribed voltage
is now available, replace the origi-
nal ECM.
(To page 11-122)
Idle Control System
Automatic Transaxle (A/T) Gear Position Signal
(From page 11-121)
Check for an open in the wire:
1. Turn the ignition switch OFF.
2. Reconnect the 30P (C412) con-
nector to the gauge assembly.
3. Reconnect the 26P connector
to the TCM.
4. Start the engine.
5. Measure voltage between ECM
connector terminals B4 and
A26 with the transmission in
position.
ECM CONNECTORS
WIRE SIDE OF FEMALE TERMINALS
Is there less than 1.0 V?
— Repair open in the wire
between the ECM (B4) and the
gauge assembly.
— Repair open in GRN wire
between the gauge assembly
and the A/T gear position
switch.
Check for an open in the wire:
Measure voltage between ECM
Connector terminals 84 and A26
with the transmission in posi-
tion.
Is there less than 1.0 V?
Repair open in GRN/WHT wire
between the gauge assembly and
the A/T gear position switch.
A/T gear position signal is OK.