Trouble-shooting Chart
Should these complaints arise, the test steps marked x are to be examined more closely.
Customer Complaint
| Leaks/blockages (air or fuel) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Starter turns, engine starts poorly or not at all | |||||||||||||||
| Engine starts but stalls again | |||||||||||||||
| Idling problems (engine speed, exhaust) | |||||||||||||||
| Poor acceptance of fuel, transitional trouble | |||||||||||||||
| Engine misfiring (ignition, injection) | |||||||||||||||
| Poor engine performance/top speed | |||||||||||||||
| Fuel consumption too high | |||||||||||||||
| Engine diesels | |||||||||||||||
| Engine pings, knocks | |||||||||||||||
| Engine gets too hot | |||||||||||||||
| Transmission does not shift (only vehicles with AT) | |||||||||||||||
| Warning lamp permanently or occasionally on | |||||||||||||||
| Possible Causes | Test Step No. | Trouble Codes | |||||||||||||
| * | * | BATTERY VOLTAGE | 01 | 48, 49 | |||||||||||
| * | * | IGNITION CODING | 02 | - | |||||||||||
| * | * | * | * | EXHAUST CODING | 03 | 13 | |||||||||
| * | TRANSM. CODING | 04 | - | ||||||||||||
| * | * | * | * | * | * | * | * | MASS AIR FLOW S. | 05 | 73, 74 | |||||
| * | * | * | * | * | IDLE CO POT. | 06 | 65, 66 | ||||||||
| * | * | * | IDLE POSITION SW | 07 | 67 | ||||||||||
| * | * | FULL POSITION SW | 08 | 72 | |||||||||||
| * | * | * | * | * | * | * | COOLANT TEMP. | 09 | 14, 15 | ||||||
| * | * | * | * | ENGINE LOAD SIG. | 10 | - | |||||||||
| * | * | * | * | * | * | * | * | * | * | INJECTION PULSE | 11 | 44, 45;25 - 2 | |||
| 81 - 84 | |||||||||||||||
| * | * | * | * | * | ENGINE SPEED | 12 | 19, 31 |
Trouble-shooting Chart (Continued)
Should these complaints arise, the test steps marked x are to be examined more closely.
Customer Complaint
| Leaks/blockages (air or fuel) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Starter turns, engine starts poorly or not at all | |||||||||||||||
| Engine starts but stalls again | |||||||||||||||
| Idling problems (engine speed, exhaust) | |||||||||||||||
| Poor acceptance of fuel, transitional trouble | |||||||||||||||
| Engine misfiring (ignition, injection) | |||||||||||||||
| Poor engine performance/top speed | |||||||||||||||
| Fuel consumption too high | |||||||||||||||
| Engine diesels | |||||||||||||||
| Engine pings, knocks | |||||||||||||||
| Engine gets too hot | |||||||||||||||
| Transmission does not shift (only vehicles with AT) | |||||||||||||||
| Warning lamp permanently or occasionally on | |||||||||||||||
| Possible Causes | Test Step No. | Trouble Codes | |||||||||||||
| * | * | * | * | SPARK ADVANCE | 13 | - | |||||||||
| * | * | TORQUE CONTROL | 14 | 75 | |||||||||||
| * | * | * | KNOCK RTD. CYL.1 | 15 | 16, 18 | ||||||||||
| * | * | * | KNOCK RTD. CYL.2 | 16 | 16, 18 | ||||||||||
| * | * | * | KNOCK RTD. CYL.3 | 17 | 16, 18 | ||||||||||
| * | * | * | KNOCK RTD. CYL.4 | 18 | 16, 18 | ||||||||||
| * | PARK/NEUTRAL SW. | 19 | - | ||||||||||||
| * | * | * | IAC PULSE RATIO | 20 | - | ||||||||||
| * | * | * | IAC INTEGRATOR | 21 | - | ||||||||||
| * | * | * | IAC BLOCK LEARN | 22 | - | ||||||||||
| * | * | * | * | OPEN/CLOSED LOOP | 23 | 13, 44, 45 | |||||||||
| * | * | * | * | O2 SENSOR | 24 | 13, 44, 45 |
Trouble-shooting Chart (Continued)
Should these complaints arise, the test steps marked x are to be examined more closely.
Customer Complaint
| Leaks/blockages (air or fuel) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Starter turns, engine starts poorly or not at all | |||||||||||||||
| Engine starts but stalls again | |||||||||||||||
| Idling problems (engine speed, exhaust) | |||||||||||||||
| Poor acceptance of fuel, transitional trouble | |||||||||||||||
| Engine misfiring (ignition, injection) | |||||||||||||||
| Poor engine performance/top speed | |||||||||||||||
| Fuel consumption too high | |||||||||||||||
| Engine diesels | |||||||||||||||
| Engine pings, knocks | |||||||||||||||
| Engine gets too hot | |||||||||||||||
| Transmission does not shift (only vehicles with AT) | |||||||||||||||
| Warning lamp permanently or occasionally on | |||||||||||||||
| Possible Causes | Test Step No. | Trouble Codes | |||||||||||||
| * | * | * | * | O2 INTEGRATOR | 25 | 13, 44, 45 | |||||||||
| * | * | * | * | O2 BLOCK LEARN 1 | 26 | 13, 44, 45 | |||||||||
| * | * | * | * | O2 BLOCK LEARN 2 | 27 | 13, 44, 45 | |||||||||
| * | * | * | * | PHASE SENSOR | 28 | 93, 94 | |||||||||
| * | A/C INFORMAT.SW. | 29 | - | ||||||||||||
| * | A/C COMPRESS.SW. | 30 | - | ||||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - | - | ENG. OIL TEMP.SW | 31 | - |
| * | TRAN.OIL TEMP.SW | 32 | 16, 18 | ||||||||||||
| * | * | Idle speed adjuster or circuit | 01 F5:ACTUATOR TEST | ||||||||||||
| * | * | * | * | * | * | * | * | Injection valves or circuits | 02 | ||||||
| * | * | * | * | Tank vent or circuit | 03 | ||||||||||
| * | * | * | Pick-ups/interference pulses | - | |||||||||||
| * | * | * | * | * | * | * | * | Control unit defective | - |