Automatic Trans: Diagnosis
- General Description
- ZF 4HP 16 Automatic Transaxle Introduction
- Transaxle Components
- ZF 4HP 16 Automatic Transaxle Description
- Mechanical Components
- Electronical Components
- Selector Lever/Program Switch
- Park/Neutral Position Switch
- Automatic Transaxle Output Speed Sensor (A/T OSS)
- Automatic Transaxle Input Speed Sensor (A/T ISS)
- Shift Solenoid Valve: Solenoid 1,2
- Pressure Control Solenoid Valve (EDS VALVE 3,4,5,6)
- Transaxle Fluid Temperature (TFT) Sensor
- Transaxle Electrical Connector
- Transaxle Control Module (TCM)
- Data Link Connector (DLC)
- Explanation of the Data Link Connector (CAN TYPE) 2.5 L DOHC
- TCM Inputs That Affect the 4HP 16 Transaxle
- Transaxle Identification Information
- Schematic and Routing Diagram
- Transaxle Control Module Diagram
- Shift Mode Diagram
- Power Flow Diagram Park / Neutral
- Notes
- Control (Park / Neutral)
- Reverse
- Control (Reverse)
- Drive Range - First Gear
- Control (Drive Range - First Gear)
- Drive Range - Second Gear
- Control (Drive Range - Second Gear)
- Drive Range - Third Gear
- Control (Drive Range - Third Gear)
- Drive Range - Fourth Gear
- Control (Drive Range - Fourth Gear)
- Drive Range - Fourth Gear; Emergency / Substitute Mode
- Control (Drive Range - Fourth Gear; Emergency / Substitute Mode)
- Drive Range - Third Gear; Emergency / Substitute Mode
- Control (Drive Range - Third Gear; Emergency / Substitute Mode)
- Diagnostic Information and Procedures
- Basic Knowledge Required
- Transaxle Fluid Level Service Procedure
- Clutch Plate Diagnosis
- Torque Converter Lock-Up Clutch (TCC) Diagnosis
- Functional Check
- Line Pressure Check
- Cooler Flushing and Flow Test
- Electrical / Garage Shift Test
- Road Test
- Shift Speed Chart
- Internal Wiring Harness Check
- Transaxle Wiring Harness Connector
- Symptom Diagnosis
- DTC Identification
- DTC P0562: System Voltage Low
- DTC P0563: System Voltage High
- DTC P0601: Internal Control Module Memory Checksum Error
- DTC P0603: Internal Control Module Keep Alive Memory (KAM) Error
- DTC P0604: Internal Control Module Random Access Memory (RAM) Error
- DTC P0606: Transaxle Control Module Processor Fault
- DTC P0703: Brake Switch Circuit Malfunction
- DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)
- DTC P0710: Transmission Fluid Temperature Sensor Circuit Malfunction
- DTC P0711: Transmission Fluid Temperature Sensor Circuit Range / Performance
- DTC P0715: Input Speed Sensor (ISS) Circuit Malfunction
- DTC P0716: Input Speed Sensor (ISS) Circuit Range / Performance
- DTC P0717: Input Speed Sensor (ISS) Circuit No Signal
- DTC P0720: Output Speed Sensor (OSS) Circuit Malfunction
- DTC P0721: Output Speed Sensor (OSS) Circuit Range / Performance
- DTC P0722: Output Speed Sensor (OSS) Circuit No Signal
- DTC P0725: Engine Speed Input Circuit Malfunction
- DTC P0726: Engine Speed Input Circuit Range / Performance
- DTC P0727: Engine Speed Input Circuit No Signal
- DTC P0731: Gear 1 Incorrect Ratio
- DTC P0732: Gear 2 Incorrect Ratio
- DTC P0733: Gear 3 Incorrect Ratio
- DTC P0734: Gear 4 Incorrect Ratio
- DTC P0741: TCC (Torque Converter Clutch) Circuit Stuck OFF
- DTC P0742: TCC (Torque Converter Clutch) Circuit Stuck ON
- DTC P0781: 1-2 Shift Malfunction
- DTC P0782: 2-3 Shift Malfunction
- DTC P0783: 2-4 Shift Malfunction
- DTC P1604: Data Check of Internal & Extended RAM Failed
- DTC P1606: Failure of External Watchdog
- DTC P1671: CAN Transmit Message Failure
- DTC P1672: CAN Bus Off Failure
- DTC P1673: CAN Receive ECM Message Failure
- DTC P1779: Engine Torque Input Signal Malfunction
- DTC P1791: Throttle Position Input Signal Circuit Malfunction
- DTC P1839: EDS 3 Output Shorted to Ground
- DTC P1840: EDS 3 Output Shorted to Power
- DTC P1841: EDS 3 Output Open
- DTC P1850: Solenoid 1 Output Shorted to Ground
- DTC P1851: Solenoid 1 Output Shorted to Power
- DTC P1852: Solenoid 1 Output Open
- DTC P1853: Solenoid 2 Output Shorted to Ground
- DTC P1854: Solenoid 2 Output Shorted to Power
- DTC P1855: Solenoid 2 Output Open
- DTC P1861: EDS 4 Output Shorted to Ground
- DTC P1862: EDS 4 Output Shorted to Power
- DTC P1863: EDS 4 Output Open
- DTC P1864: EDS 5 Output Shorted to Ground
- DTC P1865: EDS 5 Output Shorted to Power
- DTC P1866: EDS 5 Output Open
- DTC P1867: EDS 6 Output Shorted to Ground
- DTC P1868: EDS 6 Output Shorted to Power
- DTC P1869: EDS 6 Output Open
- DTC P1871: EDS Valve Power Supply Circuit Shorted to Power
- DTC P1874: Solenoid Valve Power Supply Circuit Shorted to Power
- DTC P1881: 2-1 Shift Malfunction
- DTC P1883: 3-2 Shift Malfunction
- DTC P1884: 4-3 Shift Malfunction
- DTC P1885: 3-1 Shift Malfunction