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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P0705: Transmission Range Circuit ("Y" Body) >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK . After performing OBD system check, go to next step.
    NOTE: Ensure PNP switch and shift cable/lever are properly adjusted before proceeding.
  2. Turn ignition on, engine off. Using scan tool, monitor PRND "A", "B", "C", "P" display while placing gear selector in each gear position. If scan tool indicates INVALID in any range, go to next step. If scan tool does not indicate INVALID in any range, see DIAGNOSTIC AIDS .
  3. Compare scan tool display for each gear position with TRANSAXLE RANGE SWITCH VALID INPUT COMBINATIONS  table. If scan tool indicates all circuits as OFF, go to next step. If scan tool does not indicate all circuits as OFF, go to step  5.
  4. Check for open or poor connection in PNP switch ground circuit. Repair as necessary. After repairs, go to step  10. If circuit is okay, go to next step.
  5. Move gear selector through all ranges and note which circuit does not correspond with TRANSAXLE RANGE SWITCH VALID INPUT COMBINATIONS  table. Disconnect TRS connector. Connect a fused jumper wire between ground and circuit with incorrect value. If jumpered circuit status changes, go to step  8. If jumpered circuit status does not change, go to next step.
  6. Check affected circuit for an open or short to ground. Repair as necessary. After repairs, go to step  10. If circuit is okay, go to next step.
  7. Check for poor connection at PCM connector. Repair as necessary. After repairs, go to step  10. If connection is okay, go to step  9.
  8. Replace PNP switch. After replacing switch, go to step  10.
  9. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
  10. Using scan tool, select DTC, CLEAR INFO. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter this DTC. Operate vehicle within conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, repeat step  2.
  11. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test.
TRANSAXLE RANGE SWITCH VALID INPUT COMBINATIONS

Gear Selector Position (1) Scan Tool PRND ABCP Display
Park (P) A=O B=X C=X P=O
Reverse (R) A=O B=O C=X P=X
Neutral (N) A=X B=O C=X P=O
Drive 4 (OD) A=X B=O C=O P=X
Drive 3 (3) A=O B=O C=O P=0
Drive 2 (2) A=O B=X C=O P=X
Drive 1 (1) A=X B=X C=O P=0
(1) O equals ON, X equals OFF.
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