Electrical System
Number of indicator light
blinks while Service Check
Connector is jumped.
When the ignition
switch is turned on,
indicator light
1 Blinks
Possible Cause Symptom
Lock-up clutch does not
engage.
Lock-up clutch does not
disengage.
Unstable idle speed.
Refer to
page
14-54
14-55
14-56
14-57
14-58
14-60
14-62
14-63
14-64
14-66Lock-up clutch does not
engage.
Lock-up clutch does not
engage.
Fails to shift (stuck in 1 st or 4th
gears).
Fails to shift other than 2nd
4th gears.
Lock-up clutch does not
engage.
Lock-up clutch engages and
disengages alternately.
Fails to shift other than 2nd
4th gears.
Lock-up clutch does not
engage.
Lock-up clutch does not
engage.
Lock-up clutch does not
engage.
Lock-up clutch does not
engage.
Disconnected lock-up control
solenoid valve A connector
Short or open in lock-up control
solenoid valve A wire
Faulty lock-up control solenoid
valve A
Disconnected lock-up control
solenoid valve B connector
Short or open in lock-up control
solenoid valve B wire
Faulty lock-up control solenoid
valve B
Disconnected throttle position
(TP) sensor connector
Short or open in TP sensor wire
Faulty TP sensor
Disconnected vehicle speed
sensor (VSS) connector
Short or open in VSS wire
Faulty VSS
Short in A/T gear position
switch wire
Faulty A/T gear position switch
Disconnected A/T gear position
switch connector
Open in A/T gear position
switch wire
Faulty A/T gear position switch
Disconnected shift control
solenoid valve A connector
Short or open in shift control
solenoid valve A wire
Faulty shift control solenoid
valve A
Disconnected shift control
solenoid valve B connector
Short or open in shift control
solenoid valve B wire
Faulty shift control solenoid
valve B
Disconnected countershaft
speed sensor connector
Short or open in countershaft
speed sensor wire
Faulty countershaft speed sen-
sor
Disconnected engine coolant
temperature (ECT) sensor
connector
Short or open in ECT sensor
wire
Faulty ECT sensor
Blinks10
9 Blinks
Blinks8
7 Blinks
6 OFF
Blinks5
4 Blinks
3 Blinks or OFF
Blinks2
Fails to shift (between 1 st
4th, 2nd 4th or 2nd 3rd
gears only).
Fails to shift (stuck in 4th gear)
If a customer describes the symptoms for codes 3, 6, 11, 14 or 1 5 yet the indicator light is not blinking, it will
be necessary to recreate the symptom by test driving, and then checking the indicator light with the ignition
still ON.
If the indicator light displays codes 1,2,3,8, 11, or 16, check first the No. 9, 13 and 18 and fuse before elec-
trical troubleshooting.
If any of the fuses have blown, repair them and then recheck.
If the indicator light displays codes other than those listed above or stays lit continuously, the TCM is faulty.
Sometimes the indicator light and the Malfunction Indicator Lamp (MID/Check Engine light may come on
simultaneously. If so, check the PGM-FI system according to the number of blinks on the MIL/Check Engine light,
then reset the memory by removing the CLOCK fuse in the main relay box for more than 10 seconds. Drive the
vehicle for several minutes at speed over 30 mph (50 km/h), then recheck the MIL/Check Engine light.
PGM-FI system
The PGM-FI system on this model is a sequential multiport fuel injectin system.
The indicator light may comes on, indicating a system problem, when, in fact, there is a poor or intermittent
electrical connection. First, check the electrical connections, clean or repair connections if necessary.
If the electrical readings are not as specified when using the test harness, check the test harness connections
before proceeding.
Disconnecting the CLOCK fuse also cancels the radio preset stations and the clock setting. Make note of the radio
presets before removing the fuse so you can reset them.
If the self-diagnosis indicator light does not blink, perform an inspection according to the table listed below.
Symptom
• Lock-up clutch does not
engage.
• Transmission jerks hard when
shifting.
• Transmission jerks hard when
shifting.
• Transmission jerks hard when
shifting
• Lock-up clutch does not
engage.
14-72
14-70
14-68
14-67
Refer to
pagePossible Cause
• Disconnected gauge assembly
connector
• Short or open in tachometer
wire
• Faulty tachometer
• Short or open in FAS (PNK)
wire between D16 terminal and
ECM.
• Trouble in ECM
• Disconnected mainshaft speed
sensor connector
• Short or open in mainshaft
speed sensor wire
• Faulty mainshaft speed sensor
• Disconnected linear solenoid
connector
• Short or open in linear solenoid
wire
• Faulty linear solenoid
Blinks
OFF
OFF
OFF
When the ignition
switch is turned on,
indicator light
Number of indicator light
blinks while Service Check
Connector is jumped.
11
14
15
16
Ref.page
14-74
14-76
14-77
14-78
NOTE: