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Trouble Code Identification

TROUBLE CODE IDENTIFICATION

Code No. Circuit Affected
No Code System Normal
11 (1) ECU (B+)
12 & 13 RPM Signal
14 Ignition Signal
21 O2 Sensor or O2 Heater Signal
22 Coolant Temp. Sensor Signal
24 Intake Air Temp. Sensor Signal
25 Lean Air/Fuel Mixture
26 Rich Air/Fuel Mixture
31 Airflow Meter Signal
32 (1) Airflow Meter Signal
35 (2) HAC Sensor Signal
41 Throttle Position Sensor Signal
42 Vehicle Speed Sensor Signal
43 Starter Signal
51 Switch Signal
52 (3) Knock Sensor Signal
53 (3) Knock Sensor Control (ECU)
71 (4) EGR System Malfunction
(1) P/U 3VZ-E, 4Runner 3VZ-E models applicable only.
(2) P/U 22R-E & 4Runner 22R-E models applicable only.
(3) P/U (non-turbo) & 4Runner models applicable only.
(4) Applicable to all California models & all P/U 22R-E & 4Runner 22R-E models.
P/U WITH 22R-TE TURBO ENGINE TROUBLE CODE IDENTIFICATION

Code No. Circuit Affected
1 System Normal
2 Airflow Meter Signal
3 Ignition Signal
4 Coolant Temperature Sensor Signal
5 Oxygen Sensor Signal
6 RPM Signal
7 Throttle Position Sensor Signal
8 Intake Air Temperature Sensor Signal
10 Starter Signal
11 Switch Signals ("ON", "OFF")
12 Knock Sensor Signal
13 Knock Control Signal
14 Turbo Pressure
TROUBLE CODES & PROBABLE CAUSE

Code No. Probable Cause
11 (1) Main Relay and/or Circuit, Ignition Switch and/or Circuit, ECU
12 Distrib. and/or Ckt, Starter Sig., Ignitor, ECU
13 Distributor and/or Circuit, ECU
14 Ignition Coil, Ignitor and/or Circuit, ECU
21 O2 Sensor and/or O2 Heater Signal and/or Circuit, ECU
22 Coolant Temp. Sensor and/or Circuit, ECU
24 Intake Air Temp. Sensor or Circuit, ECU
25 Injector and/or Ckt, O2 Sensor and/or Circuit Airflow Meter, ECU, Fuel Line Pressure Air Intake System, Ignition System
26 Injector and/or Circuit, Fuel Line Pressure, Cold Start Injector, Airflow Meter, O2 Sensor and/or Circuit, ECU
31 Airflow Meter and/or Circuit, ECU
32 (1) Airflow Meter or Circuit, ECU
35 (2) HAC Sensor and/or Circuit, ECU
41 Throttle Position Sensor and/or Circuit, ECU
42 Vehicle Speed Sensor and/or Circuit, ECU
43 Ignition Switch and/or Circuit Starter Signal Circuit, ECU
51 Throttle Position Sensor and/or Circuit A/C Switch Circuit, A/C Amplifier, ECU Neutral/Start Switch and/or Circuit, Accelerator Pedal and/or Cable
52 (3) Knock Sensor or Circuit, ECU
53 (3) ECU
71 (4) EGR System, EGR Gas Temp. Sensor and/or Circuit, BVSV for EGR and/or Circuit, ECU
(1) P/U 3VZ-E, 4Runner 3VZ-E models applicable only.
(2) P/U 22R-E & 4Runner 22R-E models applicable only.
(3) P/U (non-turbo) & 4Runner models applicable only.
(4) Applicable to all California models & all P/U 22R-E & 4Runner 22R-E models.
P/U W/22R-TE TURBO ENG. TROUBLE CODES & PROBABLE CAUSE

Code No. Probable Cause
1 System Normal
2 Airflow Meter and/or Circuit
3 Ignitor, Coil and/or Circuit, ECU
4 Coolant Temp. Sensor and/or Circuit, ECU
5 Oxygen Sensor and/or Circuit, ECU
6 Distributor, Ignitor and/or Circuits
7 Throttle Position Sensor and/or Circuit
8 Intake Air Temp. Sensor and/or Circuit
10 Ignition Switch and/or Circuit, ECU
11 A/C Switch, Amplifier and/or Circuit, Nutral/Start Switch, Idle Switch, Throttle Position Sensor and/or Circuit, ECU
12 Knock Sensor and/or Circuit, ECU
13 ECU
14 Turbo, Airflow Meter, ECU