2002 Subaru Impreza TS, RS, WRX Factory Service & Repair Manual (P/N G1830BE1, G1830BE7)

• Covers 2002 Subaru Impreza TS, RS, WRX, and OUTBACK variants for the U.S. and Canada, with GD sedan and GG wagon identification data.
• DOHC turbo engine repair spans engine removal, cylinder-head and cylinder-block disassembly and reassembly, timing-belt work, intake/exhaust valve-clearance adjustment, and turbocharger/intercooler removal.
• 5-speed manual transmission procedures cover gearshaft and synchronizer inspection, front-differential adjustment, clutch replacement, and hydraulic clutch bleeding.
• The 4-speed automatic transmission material includes removal and installation, stall and time-lag tests, line-pressure and transfer-clutch-pressure testing, and DTC-based diagnosis.
• Chassis procedures address wheel alignment, wheel-bearing replacement, and rear-differential overhaul, plus ABS sequence control and power-steering gearbox disassembly and adjustment.
• Wiring diagrams and connector views support electrical fault tracing, with separate engine, automatic-transmission, ABS, airbag, and cruise-control diagnostic sections.

Published by Fuji Heavy Industries Ltd., the service manuals were written for Subaru service personnel and experienced mechanics. General Information adds pre-delivery inspection criteria and factory maintenance schedules for timing belt replacement, drive belt tensioning, and fluid services.

Engine coverage and diagnostic depth

The detailed engine repair volume covers the 2.0L DOHC turbo. The 2.5L naturally aspirated SOHC engine is included in general specifications, routine maintenance, and New Car Information, but its dedicated engine repair volume is not included. The cooling, lubrication, and starting/charging chapters in New Car Information explain system construction and operation rather than complete component repair.

Turbo-specific fuel-system sections cover the tumble generator valve assembly, wastegate-control solenoid, and fuel-pump controller. OBD-II code reading and no-start fault trees are covered, along with Subaru Select Monitor procedures for commanded actuator checks.

Mechanical tests cover compression, fuel pressure, oil pressure, and intake-manifold vacuum. ECM/TCM input/output tables support circuit checks. Factory tool references identify English Select Monitor kit 22771AA030 and valve-shim replacer 498187200.

Reference data include engine oil and coolant capacities, spark plug gaps, camshaft timing data, component-specific tightening torques, and wear limits. DOHC timing-belt cautions explain how uncontrolled camshaft rotation with the belt removed can make opposing valves contact and bend.

Drivetrain variants and overhaul limits

The automatic-transmission sections distinguish multi-plate transfer (MPT) on non-turbo models from variable torque distribution (VTD) on turbo models. Valve-body removal and solenoid/sensor replacement are covered. Full internal AT overhaul is outside this set; valve-body rebuilding and AT front-differential overhaul are referred to G0853ZE, a separate publication not included.

Manual-gearbox material includes bearing-preload and hypoid-backlash adjustments. The viscous-coupling center differential is serviced as an assembly rather than internally rebuilt.

Chassis and body repair

Suspension coverage includes strut disassembly and ball-joint inspection; brake material covers disc and drum configurations, hydraulic bleeding, and ABS hydraulic-unit testing. Front-axle cautions cover bearing damage caused by loading the wheel while the axle nut is loose.

Body procedures cover A/C manifold-gauge diagnosis, refrigerant recovery and charging, plus keyless-transmitter programming. Body datum points and dimensions support damage assessment. Review the factory safety protocols before working around loaded springs, pressurized refrigerant, or airbag components.

Wiring and technical illustrations

Named drawings include Engine Electrical System and A/T Control System, with turbo/non-turbo layouts where applicable. Power Supply Routing and Ground Distribution diagrams work alongside harness-location and terminal-arrangement views. The New Car Information volume adds Cooling Circuits and Engine Oil Flow illustrations to explain how those systems operate.

PDF volumes and publication codes

The set contains 2,682 pages across seven PDFs, including cover and blank pages.