P1320

COMPONENT DESCRIPTION
Ignition Coil & Power Transistor
The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns on and off the ignition coil primary circuit. This on-off operation induces the proper high voltage in the coil secondary circuit.




ECM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values and are measured between each terminal and (25) (ECCS ground) with a voltmeter.




ON BOARD DIAGNOSIS LOGIC

DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

NOTE: If both DTC P1320 (0201) and DTC P0340 (0101), P1335 (0407), P0335 (0802) or P1336 (0905) are displayed, perform TROUBLE DIAGNOSIS FOR DTC P0340, P1335, P0335 or P1336 first.

With Consult
(1) Turn ignition switch "ON".
(2) Select "DATA MONITOR" mode with CONSULT.
(3) Start engine. (It engine does not run, turn ignition switch to "START" at least 5 seconds.)

OR

With GST
(1) Turn ignition switch "ON".
(2) Start engine. (If engine does not run, turn ignition switch to "START" at least 5 seconds.)
(3) Select MODE 7 with GST.

OR

No Tools
(1) Turn ignition switch "ON".
(2) Start engine. (If engine does not run, turn ignition switch to "START" at least 5 seconds.)
(3) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
(4) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.










WIRING DIAGRAM







DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION

Ignition Coil With Power Transistor

1. Disconnect ignition coil with power transistor harness connector.







2. Check ignition coil with power transistor for resistance between terminals (1) and (2).
If NG, replace ignition coil with power transistor assembly.

Condenser
1. Disconnect condenser harness connector.




2. Check condenser continuity between terminals (1) and (2).

Resistance: Above 1 M Ohm at 25°C (77°F)