AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-103
CIRCUIT OPERATION
•
A coil built into the input shaft speed sensor
generates 0
⇔
5 volts pulse signal at both ends
of this coil when the input shaft rotates. The pulse
signal frequency increases with a rise in input
shaft speed.
•
Both ends of the coil are connected to the PCM
(terminals 57 and 103) via the input shaft speed
sensor connector (terminals 1 and 2).
•
The PCM detects the input shaft speed by the
signal input to terminal 103.
•
The input shaft speed sensor generates the pulse
signal as the teeth of the underdrive clutch
retainer pass the magnetic tip of the sensor.
DTC SET CONDITIONS
If no output pulse is detected from the input shaft
speed sensor for one second or more while driving in
3rd or 4th gear at a speed of 30 km/h (19 mph) or
more, it is judged to be an open circuit or short circuit
in the input shaft speed sensor and diagnostic
trouble code number "22" is output four times, the
transmission is locked into 3rd gear or 2nd gear as a
fail-safe measure, and the "N" range light flashes
once per second.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set:)
•
Malfunction of the input shaft speed sensor circuit
•
Malfunction of the underdrive clutch retainer
•
Damaged harness, connector
•
Malfunction of the PCM
DIAGNOSIS
Required Special Tool:
MB991502: Scan Tool (MUT-II)
AC001657
CONNECTORS: C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>, C-61 <2.4L ENGINE>
OR C-63 <3.0L ENGINE>
PCM
AM
C-54 <2.4L ENGINE>
OR
C-55 <3.0L ENGINE>
C-61 <2.4L ENGINE>
OR
C-63 <3.0L ENGINE>
AC001691
CONNECTORS: C-101, C-107
C-101
JUNCTION BLOCK
(FRONT VIEW)
C-107
AN