Home/Buick/Century/Buick Century V (1982-1996)/Repair manual/Diagnosis - 4t60-e/TROUBLE CODE DEFINITION

Contents

Wiring diagrams Section: Diagnosis - 4t60-e

APPLICATION

DESCRIPTION

OPERATION

PCM

SENSORS & SWITCHES

SOLENOIDS

SELF-DIAGNOSTICS

CLUTCH & BAND APPLICATIONS

ELECTRONIC SELF-DIAGNOSTICS

RETRIEVING CODES (WITH SCAN TOOL)

TROUBLE CODE DEFINITION

HARD OR INTERMITTENT TROUBLE CODE DETERMINATION

CLEARING TROUBLE CODES

Diagnostic Charts

Diagnostic Aids

CODE 14/P0118, COOLANT TEMP. SENSOR SIGNAL VOLTAGE LOW

CODE 15/P0117, COOLANT TEMP. SENSOR SIGNAL VOLTAGE HIGH

CODE 21/P0123, THROTTLE POSITION SENSOR SIGNAL VOLTAGE HIGH

CODE 22/P0122, THROTTLE POSITION SENSOR SIGNAL VOLTAGE LOW

CODE 24, VEHICLE SPEED SENSOR 2.3L, 3.1L "L", "N" & "W" BODIES/3.4L & 3.8L "W" BODIES

CODE 27, QUAD-DRIVER NO. 1 ERROR 2.3L "N" BODY

CODE 28, GEAR RANGE SWITCH CIRCUIT 3.1L "L" & "W"

CODE 28, GEAR RANGE SWITCH CIRCUIT 3.1L "N"

CODE 29, QUAD-DRIVER NO. 3 ERROR 2.3L "N" BODY

CODE 38, BRAKE SWITCH CIRCUIT

CODE 58, TRANS. TEMPERATURE SENSOR HIGH TEMPERATURE 3.1L "L", "N" & "W" BODIES

CODE 59, TRANS. TEMPERATURE SENSOR LOW TEMPERATURE 3.1L "L", "N" & "W" BODIES

CODE 72, VEHICLE SPEED SENSOR LOSS 3.1L "L" & "W" BODIES

CODE 79, TRANSAXLE FLUID OVERTEMP 3.1L ""N" & "W" BODIES

CODE 80/90, TRANSAXLE COMPONENT SLIPPING 3.1L "L", "N" & "W" BODIES

CODE 501/502, VEHICLE SPEED SENSOR 3.1L "A" BODY, 3.4L "W" BODY, 3.8L "C", "H", "U" & "W" BODIES

CODE 705, GEAR RANGE SWITCH CIRCUIT

CODE 712, TRANSAXLE TEMPERATURE SENSOR SIGNAL VOLTAGE LOW

CODE 713, TRANSAXLE TEMPERATURE SENSOR SIGNAL VOLTAGE HIGH

CODE 740, TCC CIRCUIT

CODE 755, SHIFT SOLENOID "B" PROBLEM

CODE 1640, QUAD-DRIVER ERROR 3.1L "A" BODY

Quad-Driver Related Symptoms

CODE 1640, QUAD-DRIVER ERROR 3.4L "W" BODY

CODE 1640, QUAD-DRIVER ERROR 3.8L "C", "H", "U" & "W" BODIES

CODE 1650, QUAD-DRIVER ERROR 3.1L "A" BODY

CODE 1650, QUAD-DRIVER ERROR 3.4L "W" BODY

CODE 1650, QUAD-DRIVER ERROR 3.8L "C", "H", "U" & "W" BODIES

ELECTRONIC TESTING

COMPONENT TESTS (WITH TEST BOX)

COMPONENT TESTS (WITHOUT TEST BOX)

All sections

TROUBLE CODE DEFINITION Buick Century V

Diagnosis - 4t60-e

TROUBLE CODE DEFINITION

Code No. (1)	Circuit Affected
12 (2)	No RPM Reference Pulse
14	Coolant Temp. Signal Voltage High
15	Coolant Temp. Signal Voltage Low
21	Throttle Position Switch Voltage High
22	Throttle Position Switch Voltage Low
24	Vehicle Speed Sensor Circuit
27	Quad Driver (TCC Problem)
29	Quad-Driver (Shift Solenoid Error)
(1) Only transaxle-related trouble codes are listed. If other trouble codes are present, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE section. (2) Display of a Code 12 is normal when no reference pulses are received by control module (engine not running).

(1)	Only transaxle-related trouble codes are listed. If other trouble codes are present, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE section.

(2)	Display of a Code 12 is normal when no reference pulses are received by control module (engine not running).

PCM TROUBLE CODE DEFINITION (2.3L)

Code No. (1)	Circuit Affected
12 (2)	No RPM Reference Pulse
14	Coolant Temp. Signal Voltage High
15	Coolant Temp. Signal Voltage Low
21	Throttle Position Switch Voltage High
22	Throttle Position Switch Voltage Low
24	Vehicle Speed Sensor Circuit
28	Gear Range Switch
58	Transaxle Temp. Signal Voltage High
59	Transaxle Temp. Signal Voltage Low
79	Transaxle Temp. Signal Voltage High
(1) Only transaxle-related trouble codes are listed. If other trouble codes are present, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE. (2) Display of a Code 12 is normal when no reference pulses are received by control module (engine not running).

(1)	Only transaxle-related trouble codes are listed. If other trouble codes are present, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE.

(2)	Display of a Code 12 is normal when no reference pulses are received by control module (engine not running).

PCM TROUBLE CODE DEFINITION (3.1L - EXCEPT CENTURY & CIERA)

Code No. (1)	Circuit Affected
P0118	Coolant Temp. Signal Voltage High
P0117	Coolant Temp. Signal Voltage Low
P0122	Throttle Position Switch Voltage Low
P0123	Throttle Position Switch Voltage High
P0501/502	Vehicle Speed Sensor Circuit
P0703	TCC Brake Switch
P0705	Gear Range Switch
P0712	Transaxle Temp. Signal Voltage High
P0713	Transaxle Temp. Signal Voltage Low
P0740	TCC Fault
P0755	Transaxle Shift Problem
P1640	Quad Driver (TCC Problem)
P1650	Quad-Driver (Shift Solenoid Error)
(1) Only transaxle-related trouble codes are listed. If other trouble codes are present, see appropriate - TESTS W/CODES article in ENGINE PERFORMANCE.

(1)	Only transaxle-related trouble codes are listed. If other trouble codes are present, see appropriate - TESTS W/CODES article in ENGINE PERFORMANCE.

PCM TROUBLE CODE DEFINITION (3.1L CENTURY & CIERA, 3.4L & 3.8L)