Difficult To Start When Cold

• Check starter signal circuit. See CODE 43 in appropriate articles;

For GS300 TESTS W/CODES

For SC300 TESTS W/CODES

For SC400 TESTS W/CODES

• Check Idle Air Control (IAC) valve circuit.
• Check fuel pump control circuit. See CODE 78 in appropriate articles;

For GS300 TESTS W/CODES

For SC300 TESTS W/CODES

For SC400 TESTS W/CODES

• Check fuel injector circuit.
• Check ignition coil resistance.
• Check distributor sensors.
• Check spark plugs.