Toyota Engine 2JZ-GE Repair Manual

 Toyota Engine 2JZ-GE Repair Manual

The 2JZ-GE is a common version. Output is 215–230 PS (158–169 kW; 212–227 bhp) at 5800 to 6000 rpm and 209–220 lb⋅ft (283–298 N⋅m) of torque at 4800 to 5800 rpm.

It uses Sequential Electronic Fuel Injection, has an aluminum head and 4 valves per cylinder, along with a cast-iron cylinder block. VVT-i was first introduced to the engines in 1995. The VVT-i version also featured DIS as opposed to the traditional distributor set-up previously seen on the 1JZ-GE. Despite the common misconception, it was not a true COP (Coil-On-Plug, also known as Plug-top coil) ignition system, instead relying on one coil to fire two cylinders, one of which was by spark plug wire.

Applications:

Toyota Altezza AS 300/Lexus IS 300

Toyota Aristo/Lexus GS 300

Toyota Crown/Crown Majesta

Toyota Mark II/Chaser/Cresta

Toyota Origin

Toyota Progres

Toyota Soarer/Lexus SC 300

Toyota Supra

HOW TO PROCEED WITH TROUBLESHOOTING

PRE–CHECK

1. DIAGNOSIS SYSTEM

(a) Description

When troubleshooting OBD II vehicles, the only difference from the usual troubleshooting procedure is that youconnect to the vehicle the OBD II scan tool complying with SAE J1978 or TOYOTA hand–held tester, and read off various data output from the vehicle’s ECM.

OBD II regulations require that the vehicle’s on–board computer lights up the Malfunction Indicator Lamp (MIL) on the instrument panel when the computer detects a malfunction in the computer itself or in drive system com- ponents which affect vehicle emissions. In addition to the MIL lighting up when a malfunction is detected, the appli- cable Diagnostic Trouble Codes (DTC) prescribed by SAE J2012 are recorded in the ECM memory (See page DI–14). If the malfunction has been repaired, the MIL goes off automatically but the DTCs remain recorded in the ECM memory.

To check the DTCs, connect the OBD II scan tool or TOYOTA hand–held tester to Data Link Connector 3 (DLC3) on the vehicle. The OBD II scan tool or TOYOTA handheld tester also enables you to erase the DTCs and check freezed frame data and various forms of engine data. (For operating instructions, see the OBD II scan tool’s instruction book.)

DTCs include SAE controlled codes and manufacturer controlled codes. SAE controlled codes must be set as prescribed by the SAE, while manufacturer controlled codes can be set freely by the manufacturer within the prescribed limits. (See DTC chart on page DI–14)

The diagnosis system operates in normal mode during normal vehicle use. It also has a check mode for technicians to simulate malfunction symptoms and troubleshoot. Most DTCs use 2 trip detection logic* to prevent erroneous detection, and ensure thorough malfunction detection. By switching the ECM to check mode when troubleshooting, the technician can cause the MIL to lightup for a malfunction that is only detected once or momentarily. (TOYOTA hand–held tester only) (See step 2)

*2 trip detection logic: When a logic malfunction is first detected, the malfunction is temporarily stored in the ECM memory. If the same malfunction is detected again during the second drive test, this second detection causes the MIL to light up.

The 2 trip repeats the same mode a 2nd time. (However, the IG switch must be turned OFF between the 1st trip and 2nd trip.)