LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1986 >> Jimmy 5.0 H, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor Tests W/Codes >> Diagnosis & Testing >> Trouble Code Identification

Trouble Code Identification

ECM TROUBLE CODE IDENTIFICATION

Code Circuit Affected
12 No Distributor Reference Signal to ECM
13 Open Oxygen Sensor Circuit
14 Coolant Sensor Circuit Shorted
15 Coolant Sensor Circuit Open
21 TPS Circuit Open or Misadjusted
23 M/C Solenoid Voltage Low to ECM
34 Diff. Press. (VAC) Sens. Signal Voltage Incorrect
41 No Distributor Reference Signal
42 EST or By-Pass Fault
43 ESC Voltage Low to ECM (4.3L Only)
44 Lean Exhaust Indication
45 Rich Exhaust Indication
51 PROM Problem
54 M/C Solenoid Voltage High to ECM